72650655 has 128 divisors (see below), whose sum is σ = 167270400. Its totient is φ = 29030400.

The previous prime is 72650621. The next prime is 72650657. The reversal of 72650655 is 55605627.

It is not a de Polignac number, because 72650655 - 2¹¹ = 72648607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72650657) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 301335 + ... + 301575.

It is an arithmetic number, because the mean of its divisors is an integer number (1306800).

Almost surely, 2^72650655 is an apocalyptic number.

72650655 is an abundant number, since it is smaller than the sum of its proper divisors (94619745).

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

72650655 is a wasteful number, since it uses less digits than its factorization.

72650655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302 (or 296 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 72650655 is about 8523.5353580542. The cubic root of 72650655 is about 417.2661723870.

The spelling of 72650655 in words is "seventy-two million, six hundred fifty thousand, six hundred fifty-five".