72677775 has 12 divisors (see below), whose sum is σ = 120160712. Its totient is φ = 38761440.

The previous prime is 72677743. The next prime is 72677791. The reversal of 72677775 is 57777627.

It is a happy number.

It is not a de Polignac number, because 72677775 - 2⁵ = 72677743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 484444 + ... + 484593.

Almost surely, 2^72677775 is an apocalyptic number.

72677775 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

72677775 is a deficient number, since it is larger than the sum of its proper divisors (47482937).

72677775 is a wasteful number, since it uses less digits than its factorization.

72677775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969050 (or 969045 counting only the distinct ones).

The product of its digits is 1008420, while the sum is 48.

The square root of 72677775 is about 8525.1260987741. The cubic root of 72677775 is about 417.3180868113.

The spelling of 72677775 in words is "seventy-two million, six hundred seventy-seven thousand, seven hundred seventy-five".