76416643 has 4 divisors (see below), whose sum is σ = 78881728. Its totient is φ = 73951560.

The previous prime is 76416629. The next prime is 76416671. The reversal of 76416643 is 34661467.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34661467 = 29 ⋅1195223.

It is a cyclic number.

It is not a de Polignac number, because 76416643 - 2¹⁷ = 76285571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (76416673) 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, 1232496 + ... + 1232557.

It is an arithmetic number, because the mean of its divisors is an integer number (19720432).

Almost surely, 2^76416643 is an apocalyptic number.

76416643 is a deficient number, since it is larger than the sum of its proper divisors (2465085).

76416643 is a wasteful number, since it uses less digits than its factorization.

76416643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2465084.

The product of its digits is 72576, while the sum is 37.

The square root of 76416643 is about 8741.6613409580. The cubic root of 76416643 is about 424.3549948383.

The spelling of 76416643 in words is "seventy-six million, four hundred sixteen thousand, six hundred forty-three".