70816812 has 24 divisors (see below), whose sum is σ = 180261312. Its totient is φ = 21459600.

The previous prime is 70816787. The next prime is 70816813. The reversal of 70816812 is 21861807.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (70816813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268114 + ... + 268377.

It is an arithmetic number, because the mean of its divisors is an integer number (7510888).

Almost surely, 2^70816812 is an apocalyptic number.

It is an amenable number.

70816812 is an abundant number, since it is smaller than the sum of its proper divisors (109444500).

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

70816812 is a wasteful number, since it uses less digits than its factorization.

70816812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536509 (or 536507 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 33.

The square root of 70816812 is about 8415.2725446060. The cubic root of 70816812 is about 413.7253423421.

The spelling of 70816812 in words is "seventy million, eight hundred sixteen thousand, eight hundred twelve".