72670550 has 12 divisors (see below), whose sum is σ = 135167316. Its totient is φ = 29068200.

The previous prime is 72670531. The next prime is 72670561. The reversal of 72670550 is 5507627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 726656 + ... + 726755.

It is an arithmetic number, because the mean of its divisors is an integer number (11263943).

Almost surely, 2^72670550 is an apocalyptic number.

72670550 is a deficient number, since it is larger than the sum of its proper divisors (62496766).

72670550 is a wasteful number, since it uses less digits than its factorization.

72670550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453423 (or 1453418 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 32.

The square root of 72670550 is about 8524.7023408445. The cubic root of 72670550 is about 417.3042576268.

The spelling of 72670550 in words is "seventy-two million, six hundred seventy thousand, five hundred fifty".