70621744 has 20 divisors (see below), whose sum is σ = 138161296. Its totient is φ = 34967232.

The previous prime is 70621739. The next prime is 70621769. The reversal of 70621744 is 44712607.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 19779 + ... + 23074.

Almost surely, 2^70621744 is an apocalyptic number.

It is an amenable number.

70621744 is a deficient number, since it is larger than the sum of its proper divisors (67539552).

70621744 is a wasteful number, since it uses less digits than its factorization.

70621744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42964 (or 42958 counting only the distinct ones).

The product of its (nonzero) digits is 9408, while the sum is 31.

The square root of 70621744 is about 8403.6744344364. The cubic root of 70621744 is about 413.3451181748.

The spelling of 70621744 in words is "seventy million, six hundred twenty-one thousand, seven hundred forty-four".