72690498 has 24 divisors (see below), whose sum is σ = 157872000. Its totient is φ = 24172344.

The previous prime is 72690493. The next prime is 72690509. The reversal of 72690498 is 89409627.

It is a happy number.

72690498 is a `hidden beast` number, since 72 + 6 + 90 + 498 = 666.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72690491) 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 11 ways as a sum of consecutive naturals, for example, 3303 + ... + 12501.

It is an arithmetic number, because the mean of its divisors is an integer number (6578000).

Almost surely, 2^72690498 is an apocalyptic number.

72690498 is an abundant number, since it is smaller than the sum of its proper divisors (85181502).

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

72690498 is a wasteful number, since it uses less digits than its factorization.

72690498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9646 (or 9643 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 72690498 is about 8525.8722720904. The cubic root of 72690498 is about 417.3424373468.

The spelling of 72690498 in words is "seventy-two million, six hundred ninety thousand, four hundred ninety-eight".