2470645 has 4 divisors (see below), whose sum is σ = 2964780. Its totient is φ = 1976512.

The previous prime is 2470639. The next prime is 2470667. The reversal of 2470645 is 5460742.

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

It can be written as a sum of positive squares in 2 ways, for example, as 321489 + 2149156 = 567^2 + 1466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2470645 is a prime.

It is a super-2 number, since 2×2470645² = 12208173432050, which contains 22 as substring.

2470645 is a lucky number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247060 + ... + 247069.

It is an arithmetic number, because the mean of its divisors is an integer number (741195).

2^2470645 is an apocalyptic number.

It is an amenable number.

2470645 is a deficient number, since it is larger than the sum of its proper divisors (494135).

2470645 is an equidigital number, since it uses as much as digits as its factorization.

2470645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494134.

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

The square root of 2470645 is about 1571.8285529917. The cubic root of 2470645 is about 135.1875764701.

The spelling of 2470645 in words is "two million, four hundred seventy thousand, six hundred forty-five".