69145912 has 64 divisors (see below), whose sum is σ = 149299200. Its totient is φ = 29715840.

The previous prime is 69145907. The next prime is 69145927. The reversal of 69145912 is 21954196.

Its product of digits (19440) is a multiple of the sum of its prime divisors (432).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256914 + ... + 257182.

It is an arithmetic number, because the mean of its divisors is an integer number (2332800).

Almost surely, 2^69145912 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69145912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74649600).

69145912 is an abundant number, since it is smaller than the sum of its proper divisors (80153288).

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

69145912 is a wasteful number, since it uses less digits than its factorization.

69145912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436 (or 432 counting only the distinct ones).

The product of its digits is 19440, while the sum is 37.

The square root of 69145912 is about 8315.4020949080. The cubic root of 69145912 is about 410.4455042406.

The spelling of 69145912 in words is "sixty-nine million, one hundred forty-five thousand, nine hundred twelve".