72274655 has 8 divisors (see below), whose sum is σ = 86799600. Its totient is φ = 57773056.

The previous prime is 72274627. The next prime is 72274703. The reversal of 72274655 is 55647227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72274655 - 2⁸ = 72274399 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1916 + ... + 12174.

It is an arithmetic number, because the mean of its divisors is an integer number (10849950).

Almost surely, 2^72274655 is an apocalyptic number.

72274655 is a deficient number, since it is larger than the sum of its proper divisors (14524945).

72274655 is a wasteful number, since it uses less digits than its factorization.

72274655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11673.

The product of its digits is 117600, while the sum is 38.

The square root of 72274655 is about 8501.4501704121. The cubic root of 72274655 is about 416.5450799012.

The spelling of 72274655 in words is "seventy-two million, two hundred seventy-four thousand, six hundred fifty-five".