76737621 has 4 divisors (see below), whose sum is σ = 102316832. Its totient is φ = 51158412.

The previous prime is 76737601. The next prime is 76737653. The reversal of 76737621 is 12673767.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12673767 = 3 ⋅4224589.

It is not a de Polignac number, because 76737621 - 2⁵ = 76737589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 76737621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76737601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12789601 + ... + 12789606.

It is an arithmetic number, because the mean of its divisors is an integer number (25579208).

Almost surely, 2^76737621 is an apocalyptic number.

It is an amenable number.

76737621 is a deficient number, since it is larger than the sum of its proper divisors (25579211).

76737621 is a wasteful number, since it uses less digits than its factorization.

76737621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25579210.

The product of its digits is 74088, while the sum is 39.

The square root of 76737621 is about 8760.0011986301. The cubic root of 76737621 is about 424.9483138990.

The spelling of 76737621 in words is "seventy-six million, seven hundred thirty-seven thousand, six hundred twenty-one".