70790661 has 6 divisors (see below), whose sum is σ = 102253190. Its totient is φ = 47193768.

The previous prime is 70790611. The next prime is 70790677. The reversal of 70790661 is 16609707.

It can be written as a sum of positive squares in only one way, i.e., 56160036 + 14630625 = 7494^2 + 3825^2 .

It is not a de Polignac number, because 70790661 - 2¹⁹ = 70266373 is a prime.

It is a super-2 number, since 2×70790661² = 10022635369633842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70790611) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3932806 + ... + 3932823.

Almost surely, 2^70790661 is an apocalyptic number.

It is an amenable number.

70790661 is a deficient number, since it is larger than the sum of its proper divisors (31462529).

70790661 is a wasteful number, since it uses less digits than its factorization.

70790661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7865635 (or 7865632 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 70790661 is about 8413.7186190174. The cubic root of 70790661 is about 413.6744096931.

The spelling of 70790661 in words is "seventy million, seven hundred ninety thousand, six hundred sixty-one".