16971795 has 16 divisors (see below), whose sum is σ = 30172320. Its totient is φ = 9051552.

The previous prime is 16971791. The next prime is 16971811. The reversal of 16971795 is 59717961.

It is not a de Polignac number, because 16971795 - 2² = 16971791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 16971795.

It is not an unprimeable number, because it can be changed into a prime (16971791) 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, 62724 + ... + 62993.

It is an arithmetic number, because the mean of its divisors is an integer number (1885770).

Almost surely, 2^16971795 is an apocalyptic number.

16971795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

16971795 is a deficient number, since it is larger than the sum of its proper divisors (13200525).

16971795 is a wasteful number, since it uses less digits than its factorization.

16971795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125731 (or 125725 counting only the distinct ones).

The product of its digits is 119070, while the sum is 45.

The square root of 16971795 is about 4119.6838470931. The cubic root of 16971795 is about 256.9858783946.

It can be divided in two parts, 16971 and 795, that added together give a triangular number (17766 = T₁₈₈).

The spelling of 16971795 in words is "sixteen million, nine hundred seventy-one thousand, seven hundred ninety-five".