70923561 has 16 divisors (see below), whose sum is σ = 102235200. Its totient is φ = 43581888.

The previous prime is 70923547. The next prime is 70923571. The reversal of 70923561 is 16532907.

It is not a de Polignac number, because 70923561 - 2⁶ = 70923497 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70923571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14706 + ... + 18923.

It is an arithmetic number, because the mean of its divisors is an integer number (6389700).

Almost surely, 2^70923561 is an apocalyptic number.

It is an amenable number.

70923561 is a deficient number, since it is larger than the sum of its proper divisors (31311639).

70923561 is a wasteful number, since it uses less digits than its factorization.

70923561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33688.

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

The square root of 70923561 is about 8421.6127315378. The cubic root of 70923561 is about 413.9331206582.

The spelling of 70923561 in words is "seventy million, nine hundred twenty-three thousand, five hundred sixty-one".