69478772 has 48 divisors (see below), whose sum is σ = 136453632. Its totient is φ = 30689280.

The previous prime is 69478771. The next prime is 69478777. The reversal of 69478772 is 27787496.

It is a self number, because there is not a number n which added to its sum of digits gives 69478772.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69478771) 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, 311453 + ... + 311675.

It is an arithmetic number, because the mean of its divisors is an integer number (2842784).

Almost surely, 2^69478772 is an apocalyptic number.

It is an amenable number.

69478772 is a deficient number, since it is larger than the sum of its proper divisors (66974860).

69478772 is a wasteful number, since it uses less digits than its factorization.

69478772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408 (or 406 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 50.

The square root of 69478772 is about 8335.3927321992. The cubic root of 69478772 is about 411.1030617908.

The spelling of 69478772 in words is "sixty-nine million, four hundred seventy-eight thousand, seven hundred seventy-two".