69399774 has 16 divisors (see below), whose sum is σ = 154221840. Its totient is φ = 23133240.

The previous prime is 69399773. The next prime is 69399779. The reversal of 69399774 is 47799396.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1285181 = 69399774 / (6 + 9 + 3 + 9 + 9 + 7 + 7 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 69399774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69399773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 642537 + ... + 642644.

It is an arithmetic number, because the mean of its divisors is an integer number (9638865).

Almost surely, 2^69399774 is an apocalyptic number.

69399774 is an abundant number, since it is smaller than the sum of its proper divisors (84822066).

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

69399774 is a wasteful number, since it uses less digits than its factorization.

69399774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285192 (or 1285186 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 54.

The square root of 69399774 is about 8330.6526755111. The cubic root of 69399774 is about 410.9471933860.

The spelling of 69399774 in words is "sixty-nine million, three hundred ninety-nine thousand, seven hundred seventy-four".