7405666697 has 60 divisors (see below), whose sum is σ = 9159944220. Its totient is φ = 5979916800.

The previous prime is 7405666691. The next prime is 7405666703. The reversal of 7405666697 is 7966665047.

It is an interprime number because it is at equal distance from previous prime (7405666691) and next prime (7405666703).

It can be written as a sum of positive squares in 6 ways, for example, as 2632100416 + 4773566281 = 51304^2 + 69091^2 .

It is not a de Polignac number, because 7405666697 - 2⁸ = 7405666441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7405666691) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 101447453 + ... + 101447525.

It is an arithmetic number, because the mean of its divisors is an integer number (152665737).

Almost surely, 2^7405666697 is an apocalyptic number.

It is an amenable number.

7405666697 is a deficient number, since it is larger than the sum of its proper divisors (1754277523).

7405666697 is an equidigital number, since it uses as much as digits as its factorization.

7405666697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184 (or 138 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 56.

The square root of 7405666697 is about 86056.1833745838. The cubic root of 7405666697 is about 1949.1924508028.

The spelling of 7405666697 in words is "seven billion, four hundred five million, six hundred sixty-six thousand, six hundred ninety-seven".