15997070 has 8 divisors (see below), whose sum is σ = 28794744. Its totient is φ = 6398824.

The previous prime is 15997063. The next prime is 15997073. The reversal of 15997070 is 7079951.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15997073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 799844 + ... + 799863.

It is an arithmetic number, because the mean of its divisors is an integer number (3599343).

Almost surely, 2^15997070 is an apocalyptic number.

15997070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

15997070 is a deficient number, since it is larger than the sum of its proper divisors (12797674).

15997070 is a wasteful number, since it uses less digits than its factorization.

15997070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1599714.

The product of its (nonzero) digits is 19845, while the sum is 38.

The square root of 15997070 is about 3999.6337332311. The cubic root of 15997070 is about 251.9688275038.

The spelling of 15997070 in words is "fifteen million, nine hundred ninety-seven thousand, seventy".