69957493 has 4 divisors (see below), whose sum is σ = 70165420. Its totient is φ = 69749568.

The previous prime is 69957457. The next prime is 69957527. The reversal of 69957493 is 39475996.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11847364 + 58110129 = 3442^2 + 7623^2 .

It is a cyclic number.

It is not a de Polignac number, because 69957493 - 2²⁵ = 36403061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 69957493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69957443) 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, 103458 + ... + 104131.

It is an arithmetic number, because the mean of its divisors is an integer number (17541355).

Almost surely, 2^69957493 is an apocalyptic number.

It is an amenable number.

69957493 is a deficient number, since it is larger than the sum of its proper divisors (207927).

69957493 is a wasteful number, since it uses less digits than its factorization.

69957493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207926.

The product of its digits is 1837080, while the sum is 52.

The square root of 69957493 is about 8364.0596004572. The cubic root of 69957493 is about 412.0450923876.

The spelling of 69957493 in words is "sixty-nine million, nine hundred fifty-seven thousand, four hundred ninety-three".