70961620 has 12 divisors (see below), whose sum is σ = 149019444. Its totient is φ = 28384640.

The previous prime is 70961603. The next prime is 70961623. The reversal of 70961620 is 2616907.

It can be written as a sum of positive squares in 2 ways, for example, as 12194064 + 58767556 = 3492^2 + 7666^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70961623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1774021 + ... + 1774060.

It is an arithmetic number, because the mean of its divisors is an integer number (12418287).

Almost surely, 2^70961620 is an apocalyptic number.

It is an amenable number.

70961620 is an abundant number, since it is smaller than the sum of its proper divisors (78057824).

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

70961620 is a wasteful number, since it uses less digits than its factorization.

70961620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3548090 (or 3548088 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 70961620 is about 8423.8720313167. The cubic root of 70961620 is about 414.0071490127.

The spelling of 70961620 in words is "seventy million, nine hundred sixty-one thousand, six hundred twenty".