97769 has 4 divisors (see below), whose sum is σ = 111744. Its totient is φ = 83796.

The previous prime is 97729. The next prime is 97771. The reversal of 97769 is 96779.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 97769 - 2¹⁶ = 32233 is a prime.

It is a super-2 number, since 2×97769² = 19117554722, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (97729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6977 + ... + 6990.

It is an arithmetic number, because the mean of its divisors is an integer number (27936).

2⁹⁷⁷⁶⁹ is an apocalyptic number.

It is an amenable number.

97769 is a deficient number, since it is larger than the sum of its proper divisors (13975).

97769 is a wasteful number, since it uses less digits than its factorization.

97769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13974.

The product of its digits is 23814, while the sum is 38.

The square root of 97769 is about 312.6803479594. The cubic root of 97769 is about 46.0681095643.

Subtracting from 97769 its reverse (96779), we obtain a triangular number (990 = T₄₄).

The spelling of 97769 in words is "ninety-seven thousand, seven hundred sixty-nine".