10505997 has 8 divisors (see below), whose sum is σ = 15564480. Its totient is φ = 7003980.

The previous prime is 10505987. The next prime is 10506007. The reversal of 10505997 is 79950501.

It is a happy number.

10505997 is a `hidden beast` number, since 10 + 50 + 599 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (10505987) and next prime (10506007).

It is not a de Polignac number, because 10505997 - 2⁴ = 10505981 is a prime.

It is a super-2 number, since 2×10505997² = 220751945928018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10505987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194529 + ... + 194582.

It is an arithmetic number, because the mean of its divisors is an integer number (1945560).

Almost surely, 2^10505997 is an apocalyptic number.

It is an amenable number.

10505997 is a deficient number, since it is larger than the sum of its proper divisors (5058483).

10505997 is an equidigital number, since it uses as much as digits as its factorization.

10505997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389120 (or 389114 counting only the distinct ones).

The product of its (nonzero) digits is 14175, while the sum is 36.

The square root of 10505997 is about 3241.2955743036. The cubic root of 10505997 is about 219.0176379114.

The spelling of 10505997 in words is "ten million, five hundred five thousand, nine hundred ninety-seven".