997964503 has 16 divisors (see below), whose sum is σ = 1051315200. Its totient is φ = 945495936.

The previous prime is 997964441. The next prime is 997964519. The reversal of 997964503 is 305469799.

It is a cyclic number.

It is not a de Polignac number, because 997964503 - 2⁹ = 997963991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997964543) 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, 1542126 + ... + 1542772.

It is an arithmetic number, because the mean of its divisors is an integer number (65707200).

Almost surely, 2^997964503 is an apocalyptic number.

997964503 is a deficient number, since it is larger than the sum of its proper divisors (53350697).

997964503 is a wasteful number, since it uses less digits than its factorization.

997964503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206.

The product of its (nonzero) digits is 1837080, while the sum is 52.

The square root of 997964503 is about 31590.5761739162. The cubic root of 997964503 is about 999.3210401178.

The spelling of 997964503 in words is "nine hundred ninety-seven million, nine hundred sixty-four thousand, five hundred three".