2406600665 has 64 divisors (see below), whose sum is σ = 3571236864. Its totient is φ = 1519561728.

The previous prime is 2406600661. The next prime is 2406600689. The reversal of 2406600665 is 5660066042.

It is not a de Polignac number, because 2406600665 - 2² = 2406600661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2406600661) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6557312 + ... + 6557678.

It is an arithmetic number, because the mean of its divisors is an integer number (55800576).

Almost surely, 2^2406600665 is an apocalyptic number.

It is an amenable number.

2406600665 is a deficient number, since it is larger than the sum of its proper divisors (1164636199).

2406600665 is a wasteful number, since it uses less digits than its factorization.

2406600665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 2406600665 is about 49057.1163543068. The cubic root of 2406600665 is about 1340.0921940355.

The spelling of 2406600665 in words is "two billion, four hundred six million, six hundred thousand, six hundred sixty-five".