70989012 has 36 divisors (see below), whose sum is σ = 179874240. Its totient is φ = 23606352.

The previous prime is 70989011. The next prime is 70989041. The reversal of 70989012 is 21098907.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×70989012² = 10078879649472288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70989011) 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 11 ways as a sum of consecutive naturals, for example, 14539 + ... + 18797.

Almost surely, 2^70989012 is an apocalyptic number.

It is an amenable number.

70989012 is an abundant number, since it is smaller than the sum of its proper divisors (108885228).

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

70989012 is a wasteful number, since it uses less digits than its factorization.

70989012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732 (or 4727 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 70989012 is about 8425.4977301047. The cubic root of 70989012 is about 414.0604126640.

It can be divided in two parts, 7098 and 9012, that added together give a triangular number (16110 = T₁₇₉).

The spelling of 70989012 in words is "seventy million, nine hundred eighty-nine thousand, twelve".