69964491 has 16 divisors (see below), whose sum is σ = 96219648. Its totient is φ = 45192000.

The previous prime is 69964481. The next prime is 69964507. The reversal of 69964491 is 19446996.

It is not a de Polignac number, because 69964491 - 2¹⁴ = 69948107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 69964491.

It is not an unprimeable number, because it can be changed into a prime (69964421) 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 15 ways as a sum of consecutive naturals, for example, 16690 + ... + 20456.

It is an arithmetic number, because the mean of its divisors is an integer number (6013728).

Almost surely, 2^69964491 is an apocalyptic number.

69964491 is a deficient number, since it is larger than the sum of its proper divisors (26255157).

69964491 is a wasteful number, since it uses less digits than its factorization.

69964491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3962.

The product of its digits is 419904, while the sum is 48.

The square root of 69964491 is about 8364.4779275218. The cubic root of 69964491 is about 412.0588311847.

The spelling of 69964491 in words is "sixty-nine million, nine hundred sixty-four thousand, four hundred ninety-one".