16740631 has 8 divisors (see below), whose sum is σ = 18138384. Its totient is φ = 15388800.

The previous prime is 16740623. The next prime is 16740641. The reversal of 16740631 is 13604761.

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

It is a cyclic number.

It is not a de Polignac number, because 16740631 - 2³ = 16740623 is a prime.

It is a super-2 number, since 2×16740631² = 560497452556322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16740631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16740641) 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, 10720 + ... + 12181.

It is an arithmetic number, because the mean of its divisors is an integer number (2267298).

Almost surely, 2^16740631 is an apocalyptic number.

16740631 is a deficient number, since it is larger than the sum of its proper divisors (1397753).

16740631 is a wasteful number, since it uses less digits than its factorization.

16740631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22961.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 16740631 is about 4091.5316203104. The cubic root of 16740631 is about 255.8137836450.

It can be divided in two parts, 16740 and 631, that added together give a palindrome (17371).

The spelling of 16740631 in words is "sixteen million, seven hundred forty thousand, six hundred thirty-one".