70400658 has 16 divisors (see below), whose sum is σ = 141312960. Its totient is φ = 23381616.

The previous prime is 70400657. The next prime is 70400669. The reversal of 70400658 is 85600407.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (70400657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19518 + ... + 22841.

It is an arithmetic number, because the mean of its divisors is an integer number (8832060).

Almost surely, 2^70400658 is an apocalyptic number.

70400658 is an abundant number, since it is smaller than the sum of its proper divisors (70912302).

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

70400658 is a wasteful number, since it uses less digits than its factorization.

70400658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42641.

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 70400658 is about 8390.5099964186. The cubic root of 70400658 is about 412.9133326185.

The spelling of 70400658 in words is "seventy million, four hundred thousand, six hundred fifty-eight".