70065690 has 16 divisors (see below), whose sum is σ = 168157728. Its totient is φ = 18684176.

The previous prime is 70065683. The next prime is 70065691. The reversal of 70065690 is 9656007.

It is a super-2 number, since 2×70065690² = 9818401830352200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (70065691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1167732 + ... + 1167791.

It is an arithmetic number, because the mean of its divisors is an integer number (10509858).

Almost surely, 2^70065690 is an apocalyptic number.

70065690 is an abundant number, since it is smaller than the sum of its proper divisors (98092038).

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

70065690 is a wasteful number, since it uses less digits than its factorization.

70065690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2335533.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 70065690 is about 8370.5250731361. The cubic root of 70065690 is about 412.2574074044.

The spelling of 70065690 in words is "seventy million, sixty-five thousand, six hundred ninety".