69957961 has 8 divisors (see below), whose sum is σ = 71436960. Its totient is φ = 68494272.

The previous prime is 69957919. The next prime is 69957977. The reversal of 69957961 is 16975996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69957961 - 2¹⁹ = 69433673 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69957899 and 69957908.

It is not an unprimeable number, because it can be changed into a prime (69957361) 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 7 ways as a sum of consecutive naturals, for example, 5650 + ... + 13108.

It is an arithmetic number, because the mean of its divisors is an integer number (8929620).

Almost surely, 2^69957961 is an apocalyptic number.

It is an amenable number.

69957961 is a deficient number, since it is larger than the sum of its proper divisors (1478999).

69957961 is a wasteful number, since it uses less digits than its factorization.

69957961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7655.

The product of its digits is 918540, while the sum is 52.

The square root of 69957961 is about 8364.0875772555. The cubic root of 69957961 is about 412.0460112154.

The spelling of 69957961 in words is "sixty-nine million, nine hundred fifty-seven thousand, nine hundred sixty-one".