997549514 has 32 divisors (see below), whose sum is σ = 1770007680. Its totient is φ = 417206592.

The previous prime is 997549513. The next prime is 997549523. The reversal of 997549514 is 415945799.

997549514 = 248² + 249² + ... + 1443².

It is not an unprimeable number, because it can be changed into a prime (997549513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32537 + ... + 55260.

It is an arithmetic number, because the mean of its divisors is an integer number (55312740).

Almost surely, 2^997549514 is an apocalyptic number.

997549514 is a deficient number, since it is larger than the sum of its proper divisors (772458166).

997549514 is a wasteful number, since it uses less digits than its factorization.

997549514 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87854.

The product of its digits is 2041200, while the sum is 53.

The square root of 997549514 is about 31584.0072505058. The cubic root of 997549514 is about 999.1825032145.

The spelling of 997549514 in words is "nine hundred ninety-seven million, five hundred forty-nine thousand, five hundred fourteen".