997519862 has 4 divisors (see below), whose sum is σ = 1496279796. Its totient is φ = 498759930.

The previous prime is 997519843. The next prime is 997519883. The reversal of 997519862 is 268915799.

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

It is a junction number, because it is equal to n+sod(n) for n = 997519798 and 997519807.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249379964 + ... + 249379967.

It is an arithmetic number, because the mean of its divisors is an integer number (374069949).

Almost surely, 2^997519862 is an apocalyptic number.

997519862 is a deficient number, since it is larger than the sum of its proper divisors (498759934).

997519862 is a wasteful number, since it uses less digits than its factorization.

997519862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498759933.

The product of its digits is 2449440, while the sum is 56.

The square root of 997519862 is about 31583.5378322315. The cubic root of 997519862 is about 999.1726029362.

The spelling of 997519862 in words is "nine hundred ninety-seven million, five hundred nineteen thousand, eight hundred sixty-two".