620142761 has 8 divisors (see below), whose sum is σ = 708941184. Its totient is φ = 531396000.

The previous prime is 620142751. The next prime is 620142773. The reversal of 620142761 is 167241026.

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 620142761 - 2⁶ = 620142697 is a prime.

It is not an unprimeable number, because it can be changed into a prime (620142701) 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, 17636 + ... + 39386.

It is an arithmetic number, because the mean of its divisors is an integer number (88617648).

Almost surely, 2^620142761 is an apocalyptic number.

It is an amenable number.

620142761 is a deficient number, since it is larger than the sum of its proper divisors (88798423).

620142761 is a wasteful number, since it uses less digits than its factorization.

620142761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25831.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 620142761 is about 24902.6657408399. The cubic root of 620142761 is about 852.7673409268.

Adding to 620142761 its reverse (167241026), we get a palindrome (787383787).

The spelling of 620142761 in words is "six hundred twenty million, one hundred forty-two thousand, seven hundred sixty-one".