7661253766 has 8 divisors (see below), whose sum is σ = 11492834760. Its totient is φ = 3830308848.

The previous prime is 7661253763. The next prime is 7661253811. The reversal of 7661253766 is 6673521667.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7661253763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127671 + ... + 177826.

It is an arithmetic number, because the mean of its divisors is an integer number (1436604345).

Almost surely, 2^7661253766 is an apocalyptic number.

7661253766 is a deficient number, since it is larger than the sum of its proper divisors (3831580994).

7661253766 is a wasteful number, since it uses less digits than its factorization.

7661253766 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318038.

The product of its digits is 1905120, while the sum is 49.

The square root of 7661253766 is about 87528.5882783448. The cubic root of 7661253766 is about 1971.3630672412.

The spelling of 7661253766 in words is "seven billion, six hundred sixty-one million, two hundred fifty-three thousand, seven hundred sixty-six".