97781603 has 4 divisors (see below), whose sum is σ = 103533480. Its totient is φ = 92029728.

The previous prime is 97781599. The next prime is 97781617. The reversal of 97781603 is 30618779.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 97781603 - 2² = 97781599 is a prime.

It is a super-2 number, since 2×97781603² = 19122483770499218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (97781633) 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 3 ways as a sum of consecutive naturals, for example, 2875913 + ... + 2875946.

It is an arithmetic number, because the mean of its divisors is an integer number (25883370).

Almost surely, 2^97781603 is an apocalyptic number.

97781603 is a deficient number, since it is larger than the sum of its proper divisors (5751877).

97781603 is a wasteful number, since it uses less digits than its factorization.

97781603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5751876.

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 97781603 is about 9888.4580698914. The cubic root of 97781603 is about 460.7008896280.

The spelling of 97781603 in words is "ninety-seven million, seven hundred eighty-one thousand, six hundred three".