70989075 has 48 divisors (see below), whose sum is σ = 131241600. Its totient is φ = 37620000.

The previous prime is 70989053. The next prime is 70989077. The reversal of 70989075 is 57098907.

It is not a de Polignac number, because 70989075 - 2⁶ = 70989011 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 70989075.

It is not an unprimeable number, because it can be changed into a prime (70989077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 169216 + ... + 169634.

It is an arithmetic number, because the mean of its divisors is an integer number (2734200).

Almost surely, 2^70989075 is an apocalyptic number.

70989075 is a gapful number since it is divisible by the number (75) formed by its first and last digit.

70989075 is a deficient number, since it is larger than the sum of its proper divisors (60252525).

70989075 is a wasteful number, since it uses less digits than its factorization.

70989075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The square root of 70989075 is about 8425.5014687554. The cubic root of 70989075 is about 414.0605351515.

The spelling of 70989075 in words is "seventy million, nine hundred eighty-nine thousand, seventy-five".