77296021 has 8 divisors (see below), whose sum is σ = 84528288. Its totient is φ = 70098000.

The previous prime is 77296003. The next prime is 77296027. The reversal of 77296021 is 12069277.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 77296021 - 2⁹ = 77295509 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 (77296027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3715 + ... + 12976.

It is an arithmetic number, because the mean of its divisors is an integer number (10566036).

Almost surely, 2^77296021 is an apocalyptic number.

It is an amenable number.

77296021 is a deficient number, since it is larger than the sum of its proper divisors (7232267).

77296021 is a wasteful number, since it uses less digits than its factorization.

77296021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17123.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 77296021 is about 8791.8155690392. The cubic root of 77296021 is about 425.9765704528.

The spelling of 77296021 in words is "seventy-seven million, two hundred ninety-six thousand, twenty-one".