71572670 has 32 divisors (see below), whose sum is σ = 140041440. Its totient is φ = 26179200.

The previous prime is 71572663. The next prime is 71572673. The reversal of 71572670 is 7627517.

It is a self number, because there is not a number n which added to its sum of digits gives 71572670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71572673) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11645 + ... + 16695.

It is an arithmetic number, because the mean of its divisors is an integer number (4376295).

Almost surely, 2^71572670 is an apocalyptic number.

71572670 is a deficient number, since it is larger than the sum of its proper divisors (68468770).

71572670 is a wasteful number, since it uses less digits than its factorization.

71572670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5180.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 71572670 is about 8460.0632385343. The cubic root of 71572670 is about 415.1920918436.

The spelling of 71572670 in words is "seventy-one million, five hundred seventy-two thousand, six hundred seventy".