1615000664 has 8 divisors (see below), whose sum is σ = 3028126260. Its totient is φ = 807500328.

The previous prime is 1615000661. The next prime is 1615000771. The reversal of 1615000664 is 4660005161.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1615000661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100937534 + ... + 100937549.

Almost surely, 2^1615000664 is an apocalyptic number.

It is an amenable number.

1615000664 is a deficient number, since it is larger than the sum of its proper divisors (1413125596).

1615000664 is a wasteful number, since it uses less digits than its factorization.

1615000664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201875089 (or 201875085 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1615000664 is about 40187.0708561846. The cubic root of 1615000664 is about 1173.2509154259.

The spelling of 1615000664 in words is "one billion, six hundred fifteen million, six hundred sixty-four", and thus it is an aban number.