70671730 has 16 divisors (see below), whose sum is σ = 127410264. Its totient is φ = 28224000.

The previous prime is 70671721. The next prime is 70671763. The reversal of 70671730 is 3717607.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 44262409 + 26409321 = 6653^2 + 5139^2 .

It is a junction number, because it is equal to n+sod(n) for n = 70671692 and 70671701.

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, 1480 + ... + 11980.

Almost surely, 2^70671730 is an apocalyptic number.

70671730 is a deficient number, since it is larger than the sum of its proper divisors (56738534).

70671730 is a wasteful number, since it uses less digits than its factorization.

70671730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11181.

The product of its (nonzero) digits is 6174, while the sum is 31.

The square root of 70671730 is about 8406.6479645576. The cubic root of 70671730 is about 413.4426169294.

The spelling of 70671730 in words is "seventy million, six hundred seventy-one thousand, seven hundred thirty".