2640977 has 8 divisors (see below), whose sum is σ = 2733696. Its totient is φ = 2549872.

The previous prime is 2640973. The next prime is 2640997. The reversal of 2640977 is 7790462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2640977 - 2² = 2640973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2640973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3563 + ... + 4239.

It is an arithmetic number, because the mean of its divisors is an integer number (341712).

2^2640977 is an apocalyptic number.

It is an amenable number.

2640977 is a deficient number, since it is larger than the sum of its proper divisors (92719).

2640977 is an equidigital number, since it uses as much as digits as its factorization.

2640977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 2640977 is about 1625.1083040831. The cubic root of 2640977 is about 138.2255116982.

The spelling of 2640977 in words is "two million, six hundred forty thousand, nine hundred seventy-seven".