70485640 has 16 divisors (see below), whose sum is σ = 158592780. Its totient is φ = 28194240.

The previous prime is 70485637. The next prime is 70485659. The reversal of 70485640 is 4658407.

It can be written as a sum of positive squares in 2 ways, for example, as 68790436 + 1695204 = 8294^2 + 1302^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70485596 and 70485605.

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, 881031 + ... + 881110.

Almost surely, 2^70485640 is an apocalyptic number.

It is an amenable number.

70485640 is an abundant number, since it is smaller than the sum of its proper divisors (88107140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70485640 is a wasteful number, since it uses less digits than its factorization.

70485640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1762152 (or 1762148 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 34.

The square root of 70485640 is about 8395.5726427683. The cubic root of 70485640 is about 413.0794110423.

The spelling of 70485640 in words is "seventy million, four hundred eighty-five thousand, six hundred forty".