77297323 has 4 divisors (see below), whose sum is σ = 77342320. Its totient is φ = 77252328.

The previous prime is 77297299. The next prime is 77297327. The reversal of 77297323 is 32379277.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32379277 = 7 ⋅4625611.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77297323 is a prime.

It is a super-2 number, since 2×77297323² = 11949752285932658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77297327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19815 + ... + 23392.

It is an arithmetic number, because the mean of its divisors is an integer number (19335580).

Almost surely, 2^77297323 is an apocalyptic number.

77297323 is a deficient number, since it is larger than the sum of its proper divisors (44997).

77297323 is a wasteful number, since it uses less digits than its factorization.

77297323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44996.

The product of its digits is 111132, while the sum is 40.

The square root of 77297323 is about 8791.8896148666. The cubic root of 77297323 is about 425.9789622032.

The spelling of 77297323 in words is "seventy-seven million, two hundred ninety-seven thousand, three hundred twenty-three".