76620957 has 12 divisors (see below), whose sum is σ = 118840896. Its totient is φ = 43783320.

The previous prime is 76620953. The next prime is 76620961. The reversal of 76620957 is 75902667.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (76620953) and next prime (76620961).

It is not a de Polignac number, because 76620957 - 2² = 76620953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76620953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260469 + ... + 260762.

It is an arithmetic number, because the mean of its divisors is an integer number (9903408).

Almost surely, 2^76620957 is an apocalyptic number.

It is an amenable number.

76620957 is a deficient number, since it is larger than the sum of its proper divisors (42219939).

76620957 is a wasteful number, since it uses less digits than its factorization.

76620957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521248 (or 521241 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 76620957 is about 8753.3397626277. The cubic root of 76620957 is about 424.7328554134.

It can be divided in two parts, 76620 and 957, that added together give a palindrome (77577).

The spelling of 76620957 in words is "seventy-six million, six hundred twenty thousand, nine hundred fifty-seven".