70121716 has 12 divisors (see below), whose sum is σ = 140243488. Its totient is φ = 30052152.

The previous prime is 70121699. The next prime is 70121717. The reversal of 70121716 is 61712107.

70121716 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70121717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1252146 + ... + 1252201.

Almost surely, 2^70121716 is an apocalyptic number.

It is an amenable number.

70121716 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

70121716 is a wasteful number, since it uses less digits than its factorization.

70121716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504358 (or 2504356 counting only the distinct ones).

The product of its (nonzero) digits is 588, while the sum is 25.

The square root of 70121716 is about 8373.8710283835. The cubic root of 70121716 is about 412.3672613615.

The spelling of 70121716 in words is "seventy million, one hundred twenty-one thousand, seven hundred sixteen".