69720672 has 144 divisors (see below), whose sum is σ = 222808320. Its totient is φ = 18696192.

The previous prime is 69720647. The next prime is 69720697. The reversal of 69720672 is 27602796.

It is an interprime number because it is at equal distance from previous prime (69720647) and next prime (69720697).

It is a self number, because there is not a number n which added to its sum of digits gives 69720672.

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, 194029 + ... + 194387.

It is an arithmetic number, because the mean of its divisors is an integer number (1547280).

Almost surely, 2^69720672 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 69720672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111404160).

69720672 is an abundant number, since it is smaller than the sum of its proper divisors (153087648).

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

69720672 is a wasteful number, since it uses less digits than its factorization.

69720672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 388 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 69720672 is about 8349.8905382047. The cubic root of 69720672 is about 411.5796133044.

The spelling of 69720672 in words is "sixty-nine million, seven hundred twenty thousand, six hundred seventy-two".