2495666 has 4 divisors (see below), whose sum is σ = 3743502. Its totient is φ = 1247832.

The previous prime is 2495657. The next prime is 2495723. The reversal of 2495666 is 6665942.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1274641 + 1221025 = 1129^2 + 1105^2 .

It is a d-powerful number, because it can be written as 2⁷ + 4⁹ + 9² + 5⁹ + 6² + 6³ + 6⁷ .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 623915 + ... + 623918.

2^2495666 is an apocalyptic number.

2495666 is a deficient number, since it is larger than the sum of its proper divisors (1247836).

2495666 is a wasteful number, since it uses less digits than its factorization.

2495666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1247835.

The product of its digits is 77760, while the sum is 38.

The square root of 2495666 is about 1579.7677044427. The cubic root of 2495666 is about 135.6424068918.

The spelling of 2495666 in words is "two million, four hundred ninety-five thousand, six hundred sixty-six".