16749970 has 8 divisors (see below), whose sum is σ = 30149964. Its totient is φ = 6699984.

The previous prime is 16749949. The next prime is 16749979. The reversal of 16749970 is 7994761.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16736281 + 13689 = 4091^2 + 117^2 .

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

It is a super-2 number, since 2×16749970² = 561122990001800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16749979) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 837489 + ... + 837508.

Almost surely, 2^16749970 is an apocalyptic number.

16749970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16749970 is a deficient number, since it is larger than the sum of its proper divisors (13399994).

16749970 is a wasteful number, since it uses less digits than its factorization.

16749970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1675004.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 16749970 is about 4092.6727208513. The cubic root of 16749970 is about 255.8613445924.

The spelling of 16749970 in words is "sixteen million, seven hundred forty-nine thousand, nine hundred seventy".