70837812 has 18 divisors (see below), whose sum is σ = 179062338. Its totient is φ = 23612592.

The previous prime is 70837801. The next prime is 70837841. The reversal of 70837812 is 21873807.

It can be written as a sum of positive squares in only one way, i.e., 67174416 + 3663396 = 8196^2 + 1914^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1967717 = 70837812 / (7 + 0 + 8 + 3 + 7 + 8 + 1 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 983823 + ... + 983894.

Almost surely, 2^70837812 is an apocalyptic number.

It is an amenable number.

70837812 is an abundant number, since it is smaller than the sum of its proper divisors (108224526).

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

70837812 is a wasteful number, since it uses less digits than its factorization.

70837812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1967727 (or 1967722 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 70837812 is about 8416.5201835438. The cubic root of 70837812 is about 413.7662336374.

The spelling of 70837812 in words is "seventy million, eight hundred thirty-seven thousand, eight hundred twelve".