70560921 has 4 divisors (see below), whose sum is σ = 94081232. Its totient is φ = 47040612.

The previous prime is 70560913. The next prime is 70560949. The reversal of 70560921 is 12906507.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 70560921 - 2³ = 70560913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70560901) 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, 11760151 + ... + 11760156.

It is an arithmetic number, because the mean of its divisors is an integer number (23520308).

Almost surely, 2^70560921 is an apocalyptic number.

It is an amenable number.

70560921 is a deficient number, since it is larger than the sum of its proper divisors (23520311).

70560921 is a wasteful number, since it uses less digits than its factorization.

70560921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23520310.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 70560921 is about 8400.0548212497. The cubic root of 70560921 is about 413.2264195527.

The spelling of 70560921 in words is "seventy million, five hundred sixty thousand, nine hundred twenty-one".