7671990 has 16 divisors (see below), whose sum is σ = 18412848. Its totient is φ = 2045856.

The previous prime is 7671977. The next prime is 7672003. The reversal of 7671990 is 991767.

It is an interprime number because it is at equal distance from previous prime (7671977) and next prime (7672003).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 127837 + ... + 127896.

It is an arithmetic number, because the mean of its divisors is an integer number (1150803).

Almost surely, 2^7671990 is an apocalyptic number.

7671990 is an abundant number, since it is smaller than the sum of its proper divisors (10740858).

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

7671990 is a wasteful number, since it uses less digits than its factorization.

7671990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255743.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 7671990 is about 2769.8357352016. The cubic root of 7671990 is about 197.2283505630.

The spelling of 7671990 in words is "seven million, six hundred seventy-one thousand, nine hundred ninety".