70899812 has 24 divisors (see below), whose sum is σ = 126684600. Its totient is φ = 34709760.

The previous prime is 70899797. The next prime is 70899827. The reversal of 70899812 is 21899807.

It is an interprime number because it is at equal distance from previous prime (70899797) and next prime (70899827).

It can be written as a sum of positive squares in 4 ways, for example, as 1577536 + 69322276 = 1256^2 + 8326^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67064 + ... + 68112.

It is an arithmetic number, because the mean of its divisors is an integer number (5278525).

Almost surely, 2^70899812 is an apocalyptic number.

It is an amenable number.

70899812 is a deficient number, since it is larger than the sum of its proper divisors (55784788).

70899812 is a wasteful number, since it uses less digits than its factorization.

70899812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1389 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 70899812 is about 8420.2026103889. The cubic root of 70899812 is about 413.8869131873.

The spelling of 70899812 in words is "seventy million, eight hundred ninety-nine thousand, eight hundred twelve".