2790645 has 32 divisors (see below), whose sum is σ = 5249664. Its totient is φ = 1248000.

The previous prime is 2790643. The next prime is 2790647. The reversal of 2790645 is 5460972.

It is an interprime number because it is at equal distance from previous prime (2790643) and next prime (2790647).

It is not a de Polignac number, because 2790645 - 2¹ = 2790643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2790643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1495 + ... + 2795.

It is an arithmetic number, because the mean of its divisors is an integer number (164052).

2^2790645 is an apocalyptic number.

It is an amenable number.

2790645 is a deficient number, since it is larger than the sum of its proper divisors (2459019).

2790645 is a wasteful number, since it uses less digits than its factorization.

2790645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1333.

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

The square root of 2790645 is about 1670.5223733910. The cubic root of 2790645 is about 140.7888293103.

The spelling of 2790645 in words is "two million, seven hundred ninety thousand, six hundred forty-five".