97781795 has 8 divisors (see below), whose sum is σ = 117391680. Its totient is φ = 78189760.

The previous prime is 97781791. The next prime is 97781833. The reversal of 97781795 is 59718779.

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

It is not a de Polignac number, because 97781795 - 2² = 97781791 is a prime.

It is a super-2 number, since 2×97781795² = 19122558866844050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97781791) 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, 16886 + ... + 21924.

It is an arithmetic number, because the mean of its divisors is an integer number (14673960).

Almost surely, 2^97781795 is an apocalyptic number.

97781795 is a deficient number, since it is larger than the sum of its proper divisors (19609885).

97781795 is a wasteful number, since it uses less digits than its factorization.

97781795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8925.

The product of its digits is 1111320, while the sum is 53.

The square root of 97781795 is about 9888.4677781747. The cubic root of 97781795 is about 460.7011911657.

The spelling of 97781795 in words is "ninety-seven million, seven hundred eighty-one thousand, seven hundred ninety-five".