70777812 has 96 divisors (see below), whose sum is σ = 202209280. Its totient is φ = 18817920.

The previous prime is 70777801. The next prime is 70777813. The reversal of 70777812 is 21877707.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70777813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 96993 + ... + 97719.

Almost surely, 2^70777812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70777812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101104640).

70777812 is an abundant number, since it is smaller than the sum of its proper divisors (131431468).

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

70777812 is a wasteful number, since it uses less digits than its factorization.

70777812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 821 (or 819 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 39.

The square root of 70777812 is about 8412.9550099831. The cubic root of 70777812 is about 413.6493799126.

The spelling of 70777812 in words is "seventy million, seven hundred seventy-seven thousand, eight hundred twelve".