2640475 has 6 divisors (see below), whose sum is σ = 3274220. Its totient is φ = 2112360.

The previous prime is 2640409. The next prime is 2640497. The reversal of 2640475 is 5740462.

It is not a de Polignac number, because 2640475 - 2⁷ = 2640347 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 52785 + ... + 52834.

2^2640475 is an apocalyptic number.

2640475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2640475 is a deficient number, since it is larger than the sum of its proper divisors (633745).

2640475 is a wasteful number, since it uses less digits than its factorization.

2640475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105629 (or 105624 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 28.

The square root of 2640475 is about 1624.9538454984. The cubic root of 2640475 is about 138.2167531209.

The spelling of 2640475 in words is "two million, six hundred forty thousand, four hundred seventy-five".