1072520666 has 64 divisors (see below), whose sum is σ = 1922019840. Its totient is φ = 439464960.

The previous prime is 1072520653. The next prime is 1072520689. The reversal of 1072520666 is 6660252701.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7828550 + ... + 7828686.

It is an arithmetic number, because the mean of its divisors is an integer number (30031560).

Almost surely, 2^1072520666 is an apocalyptic number.

1072520666 is a deficient number, since it is larger than the sum of its proper divisors (849499174).

1072520666 is a wasteful number, since it uses less digits than its factorization.

1072520666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 1072520666 is about 32749.3613067492. The cubic root of 1072520666 is about 1023.6116570694.

The spelling of 1072520666 in words is "one billion, seventy-two million, five hundred twenty thousand, six hundred sixty-six".