1997561714 has 8 divisors (see below), whose sum is σ = 3004978608. Its totient is φ = 995902180.

The previous prime is 1997561677. The next prime is 1997561743. The reversal of 1997561714 is 4171657991.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1438472 + ... + 1439859.

It is an arithmetic number, because the mean of its divisors is an integer number (375622326).

Almost surely, 2^1997561714 is an apocalyptic number.

1997561714 is a deficient number, since it is larger than the sum of its proper divisors (1007416894).

1997561714 is a wasteful number, since it uses less digits than its factorization.

1997561714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2878680.

The product of its digits is 476280, while the sum is 50.

The square root of 1997561714 is about 44694.0903699807. The cubic root of 1997561714 is about 1259.4088337073.

The spelling of 1997561714 in words is "one billion, nine hundred ninety-seven million, five hundred sixty-one thousand, seven hundred fourteen".