7780090 has 16 divisors (see below), whose sum is σ = 14113440. Its totient is φ = 3087760.

The previous prime is 7780081. The next prime is 7780117. The reversal of 7780090 is 900877.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1660 + ... + 4279.

It is an arithmetic number, because the mean of its divisors is an integer number (882090).

Almost surely, 2^7780090 is an apocalyptic number.

7780090 is a deficient number, since it is larger than the sum of its proper divisors (6333350).

7780090 is a wasteful number, since it uses less digits than its factorization.

7780090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6077.

The product of its (nonzero) digits is 3528, while the sum is 31.

The square root of 7780090 is about 2789.2812694312. The cubic root of 7780090 is about 198.1503636255.

The spelling of 7780090 in words is "seven million, seven hundred eighty thousand, ninety".