77623401 has 16 divisors (see below), whose sum is σ = 107573760. Its totient is φ = 49728000.

The previous prime is 77623393. The next prime is 77623421. The reversal of 77623401 is 10432677.

It is not a de Polignac number, because 77623401 - 2³ = 77623393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77623421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17401 + ... + 21401.

It is an arithmetic number, because the mean of its divisors is an integer number (6723360).

Almost surely, 2^77623401 is an apocalyptic number.

It is an amenable number.

77623401 is a deficient number, since it is larger than the sum of its proper divisors (29950359).

77623401 is a wasteful number, since it uses less digits than its factorization.

77623401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4256.

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 77623401 is about 8810.4143489396. The cubic root of 77623401 is about 426.5771179120.

The spelling of 77623401 in words is "seventy-seven million, six hundred twenty-three thousand, four hundred one".