72598690 has 8 divisors (see below), whose sum is σ = 130677660. Its totient is φ = 29039472.

The previous prime is 72598679. The next prime is 72598693. The reversal of 72598690 is 9689527.

It can be written as a sum of positive squares in 2 ways, for example, as 69172489 + 3426201 = 8317^2 + 1851^2 .

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

It is a super-2 number, since 2×72598690² = 10541139579432200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72598690.

It is not an unprimeable number, because it can be changed into a prime (72598693) by changing a digit.

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, 3629925 + ... + 3629944.

Almost surely, 2^72598690 is an apocalyptic number.

72598690 is a deficient number, since it is larger than the sum of its proper divisors (58078970).

72598690 is a wasteful number, since it uses less digits than its factorization.

72598690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7259876.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 72598690 is about 8520.4864884583. The cubic root of 72598690 is about 417.1666623481.

The spelling of 72598690 in words is "seventy-two million, five hundred ninety-eight thousand, six hundred ninety".