7764377997 has 8 divisors (see below), whose sum is σ = 10370448256. Its totient is φ = 5167279872.

The previous prime is 7764377953. The next prime is 7764378001. The reversal of 7764377997 is 7997734677.

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

It is not a de Polignac number, because 7764377997 - 2¹² = 7764373901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7764377897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2241013 + ... + 2244474.

It is an arithmetic number, because the mean of its divisors is an integer number (1296306032).

Almost surely, 2^7764377997 is an apocalyptic number.

It is an amenable number.

7764377997 is a deficient number, since it is larger than the sum of its proper divisors (2606070259).

7764377997 is a wasteful number, since it uses less digits than its factorization.

7764377997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4486067.

The product of its digits is 98018424, while the sum is 66.

The square root of 7764377997 is about 88115.7080037379. The cubic root of 7764377997 is about 1980.1688456665.

The spelling of 7764377997 in words is "seven billion, seven hundred sixty-four million, three hundred seventy-seven thousand, nine hundred ninety-seven".