69297680 has 20 divisors (see below), whose sum is σ = 161117292. Its totient is φ = 27719040.

The previous prime is 69297637. The next prime is 69297703. The reversal of 69297680 is 8679296.

It can be written as a sum of positive squares in 2 ways, for example, as 35378704 + 33918976 = 5948^2 + 5824^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-4 number, since 4×69297680⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433031 + ... + 433190.

Almost surely, 2^69297680 is an apocalyptic number.

It is an amenable number.

69297680 is an abundant number, since it is smaller than the sum of its proper divisors (91819612).

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

69297680 is a wasteful number, since it uses less digits than its factorization.

69297680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866234 (or 866228 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 69297680 is about 8324.5228091465. The cubic root of 69297680 is about 410.7455796985.

The spelling of 69297680 in words is "sixty-nine million, two hundred ninety-seven thousand, six hundred eighty".