620641935 has 24 divisors (see below), whose sum is σ = 1132400880. Its totient is φ = 313587072.

The previous prime is 620641907. The next prime is 620641943. The reversal of 620641935 is 539146026.

It is a happy number.

620641935 is a `hidden beast` number, since 6 + 2 + 0 + 641 + 9 + 3 + 5 = 666.

It is not a de Polignac number, because 620641935 - 2⁷ = 620641807 is a prime.

It is a super-2 number, since 2×620641935² = 770392822961088450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 620641935.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 362094 + ... + 363803.

It is an arithmetic number, because the mean of its divisors is an integer number (47183370).

Almost surely, 2^620641935 is an apocalyptic number.

620641935 is a deficient number, since it is larger than the sum of its proper divisors (511758945).

620641935 is a wasteful number, since it uses less digits than its factorization.

620641935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725927 (or 725924 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 620641935 is about 24912.6862260977. The cubic root of 620641935 is about 852.9960867081.

The spelling of 620641935 in words is "six hundred twenty million, six hundred forty-one thousand, nine hundred thirty-five".