69921368 has 96 divisors (see below), whose sum is σ = 158008320. Its totient is φ = 28728000.

The previous prime is 69921343. The next prime is 69921409. The reversal of 69921368 is 86312996.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 984773 + ... + 984843.

It is an arithmetic number, because the mean of its divisors is an integer number (1645920).

Almost surely, 2^69921368 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 69921368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79004160).

69921368 is an abundant number, since it is smaller than the sum of its proper divisors (88086952).

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

69921368 is a wasteful number, since it uses less digits than its factorization.

69921368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 134 counting only the distinct ones).

The product of its digits is 139968, while the sum is 44.

The square root of 69921368 is about 8361.8997841400. The cubic root of 69921368 is about 411.9741555410.

The spelling of 69921368 in words is "sixty-nine million, nine hundred twenty-one thousand, three hundred sixty-eight".