7690649805 has 54 divisors (see below), whose sum is σ = 14179168926. Its totient is φ = 3855384576.

The previous prime is 7690649801. The next prime is 7690649807. The reversal of 7690649805 is 5089460967.

It can be written as a sum of positive squares in 9 ways, for example, as 578594916 + 7112054889 = 24054^2 + 84333^2 .

It is not a de Polignac number, because 7690649805 - 2² = 7690649801 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7690649801) by changing a digit.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 10000461 + ... + 10001229.

Almost surely, 2^7690649805 is an apocalyptic number.

It is an amenable number.

7690649805 is a deficient number, since it is larger than the sum of its proper divisors (6488519121).

7690649805 is an equidigital number, since it uses as much as digits as its factorization.

7690649805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 3265920, while the sum is 54.

The square root of 7690649805 is about 87696.3500095643. The cubic root of 7690649805 is about 1973.8812062239.

The spelling of 7690649805 in words is "seven billion, six hundred ninety million, six hundred forty-nine thousand, eight hundred five".