7651966 has 8 divisors (see below), whose sum is σ = 13117680. Its totient is φ = 3279408.

The previous prime is 7651961. The next prime is 7651993. The reversal of 7651966 is 6691567.

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

It is a d-powerful number, because it can be written as 7⁷ + 6⁵ + 5⁷ + 1 + 9⁷ + 6⁷ + 6⁸ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7651961) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 273271 + ... + 273298.

It is an arithmetic number, because the mean of its divisors is an integer number (1639710).

Almost surely, 2^7651966 is an apocalyptic number.

7651966 is a deficient number, since it is larger than the sum of its proper divisors (5465714).

7651966 is a wasteful number, since it uses less digits than its factorization.

7651966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546578.

The product of its digits is 68040, while the sum is 40.

The square root of 7651966 is about 2766.2187187567. The cubic root of 7651966 is about 197.0566114883.

The spelling of 7651966 in words is "seven million, six hundred fifty-one thousand, nine hundred sixty-six".