70631470 has 32 divisors (see below), whose sum is σ = 156477888. Its totient is φ = 22353408.

The previous prime is 70631453. The next prime is 70631471. The reversal of 70631470 is 7413607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70631471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37899 + ... + 39718.

It is an arithmetic number, because the mean of its divisors is an integer number (4889934).

Almost surely, 2^70631470 is an apocalyptic number.

70631470 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

70631470 is an abundant number, since it is smaller than the sum of its proper divisors (85846418).

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

70631470 is a wasteful number, since it uses less digits than its factorization.

70631470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77644.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 70631470 is about 8404.2530899539. The cubic root of 70631470 is about 413.3640925485.

The spelling of 70631470 in words is "seventy million, six hundred thirty-one thousand, four hundred seventy".