70631424 has 90 divisors (see below), whose sum is σ = 204466080. Its totient is φ = 23494656.

The previous prime is 70631377. The next prime is 70631453. The reversal of 70631424 is 42413607.

70631424 is a `hidden beast` number, since 7 + 0 + 631 + 4 + 24 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 147217 + ... + 147695.

Almost surely, 2^70631424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70631424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102233040).

70631424 is an abundant number, since it is smaller than the sum of its proper divisors (133834656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70631424 is an equidigital number, since it uses as much as digits as its factorization.

70631424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 513 (or 484 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 70631424 is about 8404.2503532439. The cubic root of 70631424 is about 413.3640028116.

The spelling of 70631424 in words is "seventy million, six hundred thirty-one thousand, four hundred twenty-four".