997814007 has 12 divisors (see below), whose sum is σ = 1476440784. Its totient is φ = 648984480.

The previous prime is 997813979. The next prime is 997814009. The reversal of 997814007 is 700418799.

It is not a de Polignac number, because 997814007 - 2¹⁶ = 997748471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997814009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1351683 + ... + 1352420.

It is an arithmetic number, because the mean of its divisors is an integer number (123036732).

Almost surely, 2^997814007 is an apocalyptic number.

997814007 is a deficient number, since it is larger than the sum of its proper divisors (478626777).

997814007 is a wasteful number, since it uses less digits than its factorization.

997814007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704150 (or 2704147 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 45.

The square root of 997814007 is about 31588.1941079258. The cubic root of 997814007 is about 999.2708040692.

The spelling of 997814007 in words is "nine hundred ninety-seven million, eight hundred fourteen thousand, seven".