620762665 has 16 divisors (see below), whose sum is σ = 758292480. Its totient is φ = 487771200.

The previous prime is 620762641. The next prime is 620762677. The reversal of 620762665 is 566267026.

It is a happy number.

It is not a de Polignac number, because 620762665 - 2⁷ = 620762537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59296 + ... + 68974.

It is an arithmetic number, because the mean of its divisors is an integer number (47393280).

Almost surely, 2^620762665 is an apocalyptic number.

It is an amenable number.

620762665 is a deficient number, since it is larger than the sum of its proper divisors (137529815).

620762665 is a wasteful number, since it uses less digits than its factorization.

620762665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9912.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 620762665 is about 24915.1091709428. The cubic root of 620762665 is about 853.0513926395.

The spelling of 620762665 in words is "six hundred twenty million, seven hundred sixty-two thousand, six hundred sixty-five".