77054643 has 6 divisors (see below), whose sum is σ = 111301164. Its totient is φ = 51369756.

The previous prime is 77054641. The next prime is 77054657. The reversal of 77054643 is 34645077.

77054643 is a `hidden beast` number, since 7 + 7 + 0 + 5 + 4 + 643 = 666.

It is not a de Polignac number, because 77054643 - 2¹ = 77054641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77054598 and 77054607.

It is not an unprimeable number, because it can be changed into a prime (77054641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4280805 + ... + 4280822.

It is an arithmetic number, because the mean of its divisors is an integer number (18550194).

Almost surely, 2^77054643 is an apocalyptic number.

77054643 is a deficient number, since it is larger than the sum of its proper divisors (34246521).

77054643 is a wasteful number, since it uses less digits than its factorization.

77054643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8561633 (or 8561630 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 36.

The square root of 77054643 is about 8778.0774090914. The cubic root of 77054643 is about 425.5326985835.

The spelling of 77054643 in words is "seventy-seven million, fifty-four thousand, six hundred forty-three".