2645670742 has 32 divisors (see below), whose sum is σ = 4692076704. Its totient is φ = 1102982400.

The previous prime is 2645670721. The next prime is 2645670773. The reversal of 2645670742 is 2470765462.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15442 + ... + 74362.

It is an arithmetic number, because the mean of its divisors is an integer number (146627397).

Almost surely, 2^2645670742 is an apocalyptic number.

2645670742 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2645670742 is a deficient number, since it is larger than the sum of its proper divisors (2046405962).

2645670742 is a wasteful number, since it uses less digits than its factorization.

2645670742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59104.

The product of its (nonzero) digits is 564480, while the sum is 43.

The square root of 2645670742 is about 51436.0840461247. The cubic root of 2645670742 is about 1383.0735147527.

The spelling of 2645670742 in words is "two billion, six hundred forty-five million, six hundred seventy thousand, seven hundred forty-two".