97766405 has 32 divisors (see below), whose sum is σ = 139926528. Its totient is φ = 64742400.

The previous prime is 97766393. The next prime is 97766407. The reversal of 97766405 is 50466779.

It is not a de Polignac number, because 97766405 - 2⁶ = 97766341 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 (97766407) 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 31 ways as a sum of consecutive naturals, for example, 27299 + ... + 30671.

It is an arithmetic number, because the mean of its divisors is an integer number (4372704).

Almost surely, 2^97766405 is an apocalyptic number.

It is an amenable number.

97766405 is a deficient number, since it is larger than the sum of its proper divisors (42160123).

97766405 is a wasteful number, since it uses less digits than its factorization.

97766405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3437.

The product of its (nonzero) digits is 317520, while the sum is 44.

The square root of 97766405 is about 9887.6895683471. The cubic root of 97766405 is about 460.6770197837.

The spelling of 97766405 in words is "ninety-seven million, seven hundred sixty-six thousand, four hundred five".