2780662 has 4 divisors (see below), whose sum is σ = 4170996. Its totient is φ = 1390330.

The previous prime is 2780647. The next prime is 2780671. The reversal of 2780662 is 2660872.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 695164 + ... + 695167.

It is an arithmetic number, because the mean of its divisors is an integer number (1042749).

2^2780662 is an apocalyptic number.

2780662 is a deficient number, since it is larger than the sum of its proper divisors (1390334).

2780662 is a wasteful number, since it uses less digits than its factorization.

2780662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390333.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2780662 is about 1667.5317088439. The cubic root of 2780662 is about 140.6207469989.

The spelling of 2780662 in words is "two million, seven hundred eighty thousand, six hundred sixty-two".