70488221 has 4 divisors (see below), whose sum is σ = 71540352. Its totient is φ = 69436092.

The previous prime is 70488217. The next prime is 70488227. The reversal of 70488221 is 12288407.

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, and also an emirpimes, since its reverse is a distinct semiprime: 12288407 = 163 ⋅75389.

It is a cyclic number.

It is not a de Polignac number, because 70488221 - 2² = 70488217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70488227) 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, 525965 + ... + 526098.

It is an arithmetic number, because the mean of its divisors is an integer number (17885088).

Almost surely, 2^70488221 is an apocalyptic number.

It is an amenable number.

70488221 is a deficient number, since it is larger than the sum of its proper divisors (1052131).

70488221 is a wasteful number, since it uses less digits than its factorization.

70488221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052130.

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 70488221 is about 8395.7263533300. The cubic root of 70488221 is about 413.0844529437.

The spelling of 70488221 in words is "seventy million, four hundred eighty-eight thousand, two hundred twenty-one".