76499621 has 4 divisors (see below), whose sum is σ = 83454144. Its totient is φ = 69545100.

The previous prime is 76499581. The next prime is 76499627. The reversal of 76499621 is 12699467.

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.

It is a cyclic number.

It is not a de Polignac number, because 76499621 - 2⁶ = 76499557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76499627) 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, 3477245 + ... + 3477266.

It is an arithmetic number, because the mean of its divisors is an integer number (20863536).

Almost surely, 2^76499621 is an apocalyptic number.

It is an amenable number.

76499621 is a deficient number, since it is larger than the sum of its proper divisors (6954523).

76499621 is a wasteful number, since it uses less digits than its factorization.

76499621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6954522.

The product of its digits is 163296, while the sum is 44.

The square root of 76499621 is about 8746.4061762532. The cubic root of 76499621 is about 424.5085363962.

The spelling of 76499621 in words is "seventy-six million, four hundred ninety-nine thousand, six hundred twenty-one".