97781834 has 8 divisors (see below), whose sum is σ = 147410400. Its totient is φ = 48645036.

The previous prime is 97781833. The next prime is 97781857. The reversal of 97781834 is 43818779.

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

It is a super-2 number, since 2×97781834² = 19122574120807112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (97781833) 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, 122444 + ... + 123239.

It is an arithmetic number, because the mean of its divisors is an integer number (18426300).

Almost surely, 2^97781834 is an apocalyptic number.

97781834 is a deficient number, since it is larger than the sum of its proper divisors (49628566).

97781834 is a wasteful number, since it uses less digits than its factorization.

97781834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245884.

The product of its digits is 338688, while the sum is 47.

The square root of 97781834 is about 9888.4697501686. The cubic root of 97781834 is about 460.7012524154.

The spelling of 97781834 in words is "ninety-seven million, seven hundred eighty-one thousand, eight hundred thirty-four".