70813512 has 192 divisors, whose sum is σ = 244632960. Its totient is φ = 17971200.

The previous prime is 70813507. The next prime is 70813543. The reversal of 70813512 is 21531807.

70813512 is a `hidden beast` number, since 70 + 81 + 3 + 512 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 293712 + ... + 293952.

It is an arithmetic number, because the mean of its divisors is an integer number (1274130).

Almost surely, 2^70813512 is an apocalyptic number.

70813512 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70813512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122316480).

70813512 is an abundant number, since it is smaller than the sum of its proper divisors (173819448).

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

70813512 is a wasteful number, since it uses less digits than its factorization.

70813512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324 (or 317 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 27.

The square root of 70813512 is about 8415.0764702408. The cubic root of 70813512 is about 413.7189158321.

The spelling of 70813512 in words is "seventy million, eight hundred thirteen thousand, five hundred twelve".