72765590 has 8 divisors (see below), whose sum is σ = 130978080. Its totient is φ = 29106232.

The previous prime is 72765577. The next prime is 72765607. The reversal of 72765590 is 9556727.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3638270 + ... + 3638289.

It is an arithmetic number, because the mean of its divisors is an integer number (16372260).

Almost surely, 2^72765590 is an apocalyptic number.

72765590 is a deficient number, since it is larger than the sum of its proper divisors (58212490).

72765590 is a wasteful number, since it uses less digits than its factorization.

72765590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7276566.

The product of its (nonzero) digits is 132300, while the sum is 41.

The square root of 72765590 is about 8530.2749076451. The cubic root of 72765590 is about 417.4860979989.

The spelling of 72765590 in words is "seventy-two million, seven hundred sixty-five thousand, five hundred ninety".