2745690 has 32 divisors (see below), whose sum is σ = 6937920. Its totient is φ = 693504.

The previous prime is 2745661. The next prime is 2745697. The reversal of 2745690 is 965472.

It is a super-2 number, since 2×2745690² = 15077627152200, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2745697) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1839 + ... + 2978.

It is an arithmetic number, because the mean of its divisors is an integer number (216810).

2^2745690 is an apocalyptic number.

2745690 is an abundant number, since it is smaller than the sum of its proper divisors (4192230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2745690 is a wasteful number, since it uses less digits than its factorization.

2745690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 2745690 is about 1657.0123717100. The cubic root of 2745690 is about 140.0287355981.

The spelling of 2745690 in words is "two million, seven hundred forty-five thousand, six hundred ninety".