69768918 has 32 divisors (see below), whose sum is σ = 164164320. Its totient is φ = 21888000.

The previous prime is 69768917. The next prime is 69768949. The reversal of 69768918 is 81986796.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69768917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37083 + ... + 38918.

It is an arithmetic number, because the mean of its divisors is an integer number (5130135).

Almost surely, 2^69768918 is an apocalyptic number.

69768918 is an abundant number, since it is smaller than the sum of its proper divisors (94395402).

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

69768918 is a wasteful number, since it uses less digits than its factorization.

69768918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76029 (or 76023 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 54.

The square root of 69768918 is about 8352.7790584930. The cubic root of 69768918 is about 411.6745277246.

The spelling of 69768918 in words is "sixty-nine million, seven hundred sixty-eight thousand, nine hundred eighteen".