997661514 has 8 divisors (see below), whose sum is σ = 1995323040. Its totient is φ = 332553836.

The previous prime is 997661459. The next prime is 997661531. The reversal of 997661514 is 415166799.

It is a happy number.

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

997661514 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83138454 + ... + 83138465.

It is an arithmetic number, because the mean of its divisors is an integer number (249415380).

Almost surely, 2^997661514 is an apocalyptic number.

997661514 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

997661514 is a wasteful number, since it uses less digits than its factorization.

997661514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166276924.

The product of its digits is 408240, while the sum is 48.

The square root of 997661514 is about 31585.7802499796. The cubic root of 997661514 is about 999.2198962631.

The spelling of 997661514 in words is "nine hundred ninety-seven million, six hundred sixty-one thousand, five hundred fourteen".