70500921 has 16 divisors (see below), whose sum is σ = 99917568. Its totient is φ = 44064000.

The previous prime is 70500917. The next prime is 70500931. The reversal of 70500921 is 12900507.

It is not a de Polignac number, because 70500921 - 2² = 70500917 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70500891 and 70500900.

It is not an unprimeable number, because it can be changed into a prime (70500931) 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, 11271 + ... + 16371.

It is an arithmetic number, because the mean of its divisors is an integer number (6244848).

Almost surely, 2^70500921 is an apocalyptic number.

It is an amenable number.

70500921 is a deficient number, since it is larger than the sum of its proper divisors (29416647).

70500921 is a wasteful number, since it uses less digits than its factorization.

70500921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its (nonzero) digits is 630, while the sum is 24.

The square root of 70500921 is about 8396.4826564461. The cubic root of 70500921 is about 413.1092601973.

The spelling of 70500921 in words is "seventy million, five hundred thousand, nine hundred twenty-one".