620500749 has 8 divisors (see below), whose sum is σ = 902546592. Its totient is φ = 376061040.

The previous prime is 620500709. The next prime is 620500763. The reversal of 620500749 is 947005026.

620500749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 620500749 - 2¹¹ = 620498701 is a prime.

It is a super-2 number, since 2×620500749² = 770042359019122002, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 18803053 = 620500749 / (6 + 2 + 0 + 5 + 0 + 0 + 7 + 4 + 9).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620500709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9401494 + ... + 9401559.

It is an arithmetic number, because the mean of its divisors is an integer number (112818324).

Almost surely, 2^620500749 is an apocalyptic number.

It is an amenable number.

620500749 is a deficient number, since it is larger than the sum of its proper divisors (282045843).

620500749 is a wasteful number, since it uses less digits than its factorization.

620500749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18803067.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 620500749 is about 24909.8524483787. The cubic root of 620500749 is about 852.9314008660.

The spelling of 620500749 in words is "six hundred twenty million, five hundred thousand, seven hundred forty-nine".