70923661 has 6 divisors (see below), whose sum is σ = 71913930. Its totient is φ = 69946848.

The previous prime is 70923623. The next prime is 70923673. The reversal of 70923661 is 16632907.

It can be written as a sum of positive squares in 3 ways, for example, as 866761 + 70056900 = 931^2 + 8370^2 .

It is a de Polignac number, because none of the positive numbers 2^k-70923661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70923161) 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 5 ways as a sum of consecutive naturals, for example, 1326 + ... + 11983.

It is an arithmetic number, because the mean of its divisors is an integer number (11985655).

Almost surely, 2^70923661 is an apocalyptic number.

It is an amenable number.

70923661 is a deficient number, since it is larger than the sum of its proper divisors (990269).

70923661 is an equidigital number, since it uses as much as digits as its factorization.

70923661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455 (or 13382 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 70923661 is about 8421.6186686408. The cubic root of 70923661 is about 413.9333152024.

The spelling of 70923661 in words is "seventy million, nine hundred twenty-three thousand, six hundred sixty-one".