70082921 has 8 divisors (see below), whose sum is σ = 72150144. Its totient is φ = 68024880.

The previous prime is 70082897. The next prime is 70082923. The reversal of 70082921 is 12928007.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70082921 - 2²⁶ = 2974057 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 (70082923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15086 + ... + 19176.

It is an arithmetic number, because the mean of its divisors is an integer number (9018768).

Almost surely, 2^70082921 is an apocalyptic number.

It is an amenable number.

70082921 is a deficient number, since it is larger than the sum of its proper divisors (2067223).

70082921 is a wasteful number, since it uses less digits than its factorization.

70082921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4591.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 70082921 is about 8371.5542762381. The cubic root of 70082921 is about 412.2911996221.

The spelling of 70082921 in words is "seventy million, eighty-two thousand, nine hundred twenty-one".