72655000 has 80 divisors (see below), whose sum is σ = 185846760. Its totient is φ = 26400000.

The previous prime is 72654977. The next prime is 72655021. The reversal of 72655000 is 55627.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 54340 + ... + 55660.

Almost surely, 2^72655000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72655000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92923380).

72655000 is an abundant number, since it is smaller than the sum of its proper divisors (113191760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72655000 is a wasteful number, since it uses less digits than its factorization.

72655000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1358 (or 1339 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 72655000 is about 8523.7902367433. The cubic root of 72655000 is about 417.2744906666.

The spelling of 72655000 in words is "seventy-two million, six hundred fifty-five thousand".