70810640 has 20 divisors (see below), whose sum is σ = 164634924. Its totient is φ = 28324224.

The previous prime is 70810633. The next prime is 70810669. The reversal of 70810640 is 4601807.

It can be written as a sum of positive squares in 2 ways, for example, as 11397376 + 59413264 = 3376^2 + 7708^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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, 442487 + ... + 442646.

Almost surely, 2^70810640 is an apocalyptic number.

It is an amenable number.

70810640 is an abundant number, since it is smaller than the sum of its proper divisors (93824284).

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

70810640 is a wasteful number, since it uses less digits than its factorization.

70810640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885146 (or 885140 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 70810640 is about 8414.9058224082. The cubic root of 70810640 is about 413.7133226586.

The spelling of 70810640 in words is "seventy million, eight hundred ten thousand, six hundred forty".