72686770 has 32 divisors (see below), whose sum is σ = 144188352. Its totient is φ = 26212032.

The previous prime is 72686767. The next prime is 72686851. The reversal of 72686770 is 7768627.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912 + ... + 12091.

It is an arithmetic number, because the mean of its divisors is an integer number (4505886).

Almost surely, 2^72686770 is an apocalyptic number.

72686770 is a deficient number, since it is larger than the sum of its proper divisors (71501582).

72686770 is a wasteful number, since it uses less digits than its factorization.

72686770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13066.

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 72686770 is about 8525.6536406307. The cubic root of 72686770 is about 417.3353026261.

The spelling of 72686770 in words is "seventy-two million, six hundred eighty-six thousand, seven hundred seventy".