7620990 has 32 divisors (see below), whose sum is σ = 19698336. Its totient is φ = 1875840.

The previous prime is 7620979. The next prime is 7621037. The reversal of 7620990 is 990267.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9381 + ... + 10160.

It is an arithmetic number, because the mean of its divisors is an integer number (615573).

Almost surely, 2^7620990 is an apocalyptic number.

7620990 is an abundant number, since it is smaller than the sum of its proper divisors (12077346).

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

7620990 is a wasteful number, since it uses less digits than its factorization.

7620990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19564.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 7620990 is about 2760.6140621246. The cubic root of 7620990 is about 196.7903495995.

The spelling of 7620990 in words is "seven million, six hundred twenty thousand, nine hundred ninety".