615464668 has 96 divisors (see below), whose sum is σ = 1422489600. Its totient is φ = 226077696.

The previous prime is 615464621. The next prime is 615464677. The reversal of 615464668 is 866464516.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488223 + ... + 489481.

It is an arithmetic number, because the mean of its divisors is an integer number (14817600).

Almost surely, 2^615464668 is an apocalyptic number.

615464668 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 615464668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (711244800).

615464668 is an abundant number, since it is smaller than the sum of its proper divisors (807024932).

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

615464668 is a wasteful number, since it uses less digits than its factorization.

615464668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379 (or 1377 counting only the distinct ones).

The product of its digits is 829440, while the sum is 46.

The square root of 615464668 is about 24808.5603774181. The cubic root of 615464668 is about 850.6176217071.

The spelling of 615464668 in words is "six hundred fifteen million, four hundred sixty-four thousand, six hundred sixty-eight".