620013551 has 8 divisors (see below), whose sum is σ = 637082160. Its totient is φ = 602961408.

The previous prime is 620013487. The next prime is 620013593. The reversal of 620013551 is 155310026.

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

It is a cyclic number.

It is not a de Polignac number, because 620013551 - 2⁶ = 620013487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620013151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 142415 + ... + 146703.

It is an arithmetic number, because the mean of its divisors is an integer number (79635270).

Almost surely, 2^620013551 is an apocalyptic number.

620013551 is a deficient number, since it is larger than the sum of its proper divisors (17068609).

620013551 is a wasteful number, since it uses less digits than its factorization.

620013551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8233.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 620013551 is about 24900.0713051188. The cubic root of 620013551 is about 852.7081106288.

Adding to 620013551 its reverse (155310026), we get a palindrome (775323577).

The spelling of 620013551 in words is "six hundred twenty million, thirteen thousand, five hundred fifty-one".