70661670 has 16 divisors (see below), whose sum is σ = 169588080. Its totient is φ = 18843104.

The previous prime is 70661663. The next prime is 70661699. The reversal of 70661670 is 7616607.

It is a congruent number.

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, 1177665 + ... + 1177724.

It is an arithmetic number, because the mean of its divisors is an integer number (10599255).

Almost surely, 2^70661670 is an apocalyptic number.

70661670 is an abundant number, since it is smaller than the sum of its proper divisors (98926410).

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

70661670 is a wasteful number, since it uses less digits than its factorization.

70661670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2355399.

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 70661670 is about 8406.0496072769. The cubic root of 70661670 is about 413.4229983818.

The spelling of 70661670 in words is "seventy million, six hundred sixty-one thousand, six hundred seventy".