70020690 has 16 divisors (see below), whose sum is σ = 168049728. Its totient is φ = 18672176.

The previous prime is 70020689. The next prime is 70020701. The reversal of 70020690 is 9602007.

It is a super-2 number, since 2×70020690² = 9805794056152200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 70020690.

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, 1166982 + ... + 1167041.

It is an arithmetic number, because the mean of its divisors is an integer number (10503108).

Almost surely, 2^70020690 is an apocalyptic number.

70020690 is an abundant number, since it is smaller than the sum of its proper divisors (98029038).

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

70020690 is a wasteful number, since it uses less digits than its factorization.

70020690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2334033.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 70020690 is about 8367.8366379848. The cubic root of 70020690 is about 412.1691304538.

Adding to 70020690 its reverse (9602007), we get a palindrome (79622697).

The spelling of 70020690 in words is "seventy million, twenty thousand, six hundred ninety".