70745481 has 20 divisors (see below), whose sum is σ = 107935872. Its totient is φ = 46157688.

The previous prime is 70745473. The next prime is 70745491. The reversal of 70745481 is 18454707.

It is not a de Polignac number, because 70745481 - 2³ = 70745473 is a prime.

It is a super-2 number, since 2×70745481² = 10009846163842722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (70745431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 5485 + ... + 13098.

Almost surely, 2^70745481 is an apocalyptic number.

It is an amenable number.

70745481 is a deficient number, since it is larger than the sum of its proper divisors (37190391).

70745481 is a wasteful number, since it uses less digits than its factorization.

70745481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18642 (or 18633 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 70745481 is about 8411.0332896737. The cubic root of 70745481 is about 413.5863859009.

The spelling of 70745481 in words is "seventy million, seven hundred forty-five thousand, four hundred eighty-one".