69870440 has 16 divisors (see below), whose sum is σ = 157208580. Its totient is φ = 27948160.

The previous prime is 69870433. The next prime is 69870443. The reversal of 69870440 is 4407896.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56460196 + 13410244 = 7514^2 + 3662^2 .

It is a junction number, because it is equal to n+sod(n) for n = 69870394 and 69870403.

It is not an unprimeable number, because it can be changed into a prime (69870443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 873341 + ... + 873420.

Almost surely, 2^69870440 is an apocalyptic number.

It is an amenable number.

69870440 is an abundant number, since it is smaller than the sum of its proper divisors (87338140).

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

69870440 is a wasteful number, since it uses less digits than its factorization.

69870440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746772 (or 1746768 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 69870440 is about 8358.8539884365. The cubic root of 69870440 is about 411.8741092729.

The spelling of 69870440 in words is "sixty-nine million, eight hundred seventy thousand, four hundred forty".