70920611 has 4 divisors (see below), whose sum is σ = 72650424. Its totient is φ = 69190800.

The previous prime is 70920599. The next prime is 70920643. The reversal of 70920611 is 11602907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70920611 is a prime.

It is a super-2 number, since 2×70920611² = 10059466129226642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70920211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864845 + ... + 864926.

It is an arithmetic number, because the mean of its divisors is an integer number (18162606).

Almost surely, 2^70920611 is an apocalyptic number.

70920611 is a deficient number, since it is larger than the sum of its proper divisors (1729813).

70920611 is a wasteful number, since it uses less digits than its factorization.

70920611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1729812.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 70920611 is about 8421.4375851157. The cubic root of 70920611 is about 413.9273815234.

The spelling of 70920611 in words is "seventy million, nine hundred twenty thousand, six hundred eleven".