72643474 has 8 divisors (see below), whose sum is σ = 109038960. Its totient is φ = 36297156.

The previous prime is 72643451. The next prime is 72643489. The reversal of 72643474 is 47434627.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8344 + ... + 14659.

It is an arithmetic number, because the mean of its divisors is an integer number (13629870).

Almost surely, 2^72643474 is an apocalyptic number.

72643474 is a deficient number, since it is larger than the sum of its proper divisors (36395486).

72643474 is a wasteful number, since it uses less digits than its factorization.

72643474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24584.

The product of its digits is 112896, while the sum is 37.

The square root of 72643474 is about 8523.1141022516. The cubic root of 72643474 is about 417.2524240039.

The spelling of 72643474 in words is "seventy-two million, six hundred forty-three thousand, four hundred seventy-four".