614972440 has 64 divisors (see below), whose sum is σ = 1432805760. Its totient is φ = 237404160.

The previous prime is 614972437. The next prime is 614972443. The reversal of 614972440 is 44279416.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (614972437) and next prime (614972443).

It is a super-2 number, since 2×614972440² = 756382203919107200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 614972440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (614972443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135000 + ... + 139480.

It is an arithmetic number, because the mean of its divisors is an integer number (22387590).

Almost surely, 2^614972440 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 614972440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716402880).

614972440 is an abundant number, since it is smaller than the sum of its proper divisors (817833320).

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

614972440 is a wasteful number, since it uses less digits than its factorization.

614972440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4612 (or 4608 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 614972440 is about 24798.6378658184. The cubic root of 614972440 is about 850.3907960786.

The spelling of 614972440 in words is "six hundred fourteen million, nine hundred seventy-two thousand, four hundred forty".