97766431 has 8 divisors (see below), whose sum is σ = 111885984. Its totient is φ = 83685120.

The previous prime is 97766429. The next prime is 97766441. The reversal of 97766431 is 13466779.

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

It is a cyclic number.

It is not a de Polignac number, because 97766431 - 2¹ = 97766429 is a prime.

It is a super-2 number, since 2×97766431² = 19116550060955522, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97766441) 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, 3850 + ... + 14503.

It is an arithmetic number, because the mean of its divisors is an integer number (13985748).

Almost surely, 2^97766431 is an apocalyptic number.

97766431 is a deficient number, since it is larger than the sum of its proper divisors (14119553).

97766431 is a wasteful number, since it uses less digits than its factorization.

97766431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19121.

The product of its digits is 190512, while the sum is 43.

The square root of 97766431 is about 9887.6908831132. The cubic root of 97766431 is about 460.6770606212.

The spelling of 97766431 in words is "ninety-seven million, seven hundred sixty-six thousand, four hundred thirty-one".