72640486 has 8 divisors (see below), whose sum is σ = 113698224. Its totient is φ = 34741080.

The previous prime is 72640483. The next prime is 72640489. The reversal of 72640486 is 68404627.

It is an interprime number because it is at equal distance from previous prime (72640483) and next prime (72640489).

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

It is a super-3 number, since 3×72640486³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72640483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 789525 + ... + 789616.

It is an arithmetic number, because the mean of its divisors is an integer number (14212278).

Almost surely, 2^72640486 is an apocalyptic number.

72640486 is a deficient number, since it is larger than the sum of its proper divisors (41057738).

72640486 is a wasteful number, since it uses less digits than its factorization.

72640486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579166.

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 72640486 is about 8522.9388124050. The cubic root of 72640486 is about 417.2467030618.

The spelling of 72640486 in words is "seventy-two million, six hundred forty thousand, four hundred eighty-six".