77440627 has 16 divisors (see below), whose sum is σ = 90979200. Its totient is φ = 65127040.

The previous prime is 77440621. The next prime is 77440673. The reversal of 77440627 is 72604477.

It is a happy number.

It is not a de Polignac number, because 77440627 - 2⁷ = 77440499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77440621) 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, 7524 + ... + 14542.

It is an arithmetic number, because the mean of its divisors is an integer number (5686200).

Almost surely, 2^77440627 is an apocalyptic number.

77440627 is a deficient number, since it is larger than the sum of its proper divisors (13538573).

77440627 is a wasteful number, since it uses less digits than its factorization.

77440627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7106.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 77440627 is about 8800.0356249279. The cubic root of 77440627 is about 426.2420450696.

The spelling of 77440627 in words is "seventy-seven million, four hundred forty thousand, six hundred twenty-seven".