69331140 has 60 divisors (see below), whose sum is σ = 217499436. Its totient is φ = 18487872.

The previous prime is 69331139. The next prime is 69331183. The reversal of 69331140 is 4113396.

It can be written as a sum of positive squares in 2 ways, for example, as 50041476 + 19289664 = 7074^2 + 4392^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a super-4 number, since 4×69331140⁴ (a number of 32 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19779 + ... + 23018.

Almost surely, 2^69331140 is an apocalyptic number.

69331140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69331140 is an abundant number, since it is smaller than the sum of its proper divisors (148168296).

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

69331140 is a wasteful number, since it uses less digits than its factorization.

69331140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42818 (or 42807 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 69331140 is about 8326.5322914164. The cubic root of 69331140 is about 410.8116778021.

The spelling of 69331140 in words is "sixty-nine million, three hundred thirty-one thousand, one hundred forty".