70399860 has 48 divisors (see below), whose sum is σ = 197546496. Its totient is φ = 18732672.

The previous prime is 70399859. The next prime is 70399877. The reversal of 70399860 is 6899307.

It is a happy number.

It is a super-2 number, since 2×70399860² = 9912280576039200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35454 + ... + 37386.

It is an arithmetic number, because the mean of its divisors is an integer number (4115552).

Almost surely, 2^70399860 is an apocalyptic number.

It is an amenable number.

70399860 is an abundant number, since it is smaller than the sum of its proper divisors (127146636).

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

70399860 is a wasteful number, since it uses less digits than its factorization.

70399860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2552 (or 2550 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 70399860 is about 8390.4624425594. The cubic root of 70399860 is about 412.9117724717.

The spelling of 70399860 in words is "seventy million, three hundred ninety-nine thousand, eight hundred sixty".