77293321 has 8 divisors (see below), whose sum is σ = 88389504. Its totient is φ = 66210720.

The previous prime is 77293301. The next prime is 77293331. The reversal of 77293321 is 12339277.

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 77293321 - 2²⁵ = 43738889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77293301) 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 7 ways as a sum of consecutive naturals, for example, 16941 + ... + 21013.

It is an arithmetic number, because the mean of its divisors is an integer number (11048688).

Almost surely, 2^77293321 is an apocalyptic number.

It is an amenable number.

77293321 is a deficient number, since it is larger than the sum of its proper divisors (11096183).

77293321 is a wasteful number, since it uses less digits than its factorization.

77293321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6791.

The product of its digits is 15876, while the sum is 34.

The square root of 77293321 is about 8791.6620157966. The cubic root of 77293321 is about 425.9716105160.

The spelling of 77293321 in words is "seventy-seven million, two hundred ninety-three thousand, three hundred twenty-one".