77040971 has 4 divisors (see below), whose sum is σ = 88046832. Its totient is φ = 66035112.

The previous prime is 77040967. The next prime is 77040973. The reversal of 77040971 is 17904077.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17904077 = 17 ⋅1053181.

It is a cyclic number.

It is not a de Polignac number, because 77040971 - 2² = 77040967 is a prime.

It is a super-2 number, since 2×77040971² = 11870622425245682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77040973) 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, 5502920 + ... + 5502933.

It is an arithmetic number, because the mean of its divisors is an integer number (22011708).

Almost surely, 2^77040971 is an apocalyptic number.

77040971 is a deficient number, since it is larger than the sum of its proper divisors (11005861).

77040971 is a wasteful number, since it uses less digits than its factorization.

77040971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11005860.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 77040971 is about 8777.2986163170. The cubic root of 77040971 is about 425.5075293142.

The spelling of 77040971 in words is "seventy-seven million, forty thousand, nine hundred seventy-one".