70889620 has 24 divisors (see below), whose sum is σ = 151679304. Its totient is φ = 27820416.

The previous prime is 70889593. The next prime is 70889629. The reversal of 70889620 is 2698807.

It can be written as a sum of positive squares in 4 ways, for example, as 799236 + 70090384 = 894^2 + 8372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70889629) 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 7 ways as a sum of consecutive naturals, for example, 32379 + ... + 34498.

It is an arithmetic number, because the mean of its divisors is an integer number (6319971).

Almost surely, 2^70889620 is an apocalyptic number.

It is an amenable number.

70889620 is an abundant number, since it is smaller than the sum of its proper divisors (80789684).

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

70889620 is a wasteful number, since it uses less digits than its factorization.

70889620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66939 (or 66937 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 70889620 is about 8419.5973775472. The cubic root of 70889620 is about 413.8670798599.

The spelling of 70889620 in words is "seventy million, eight hundred eighty-nine thousand, six hundred twenty".