21674701 has 8 divisors (see below), whose sum is σ = 22222944. Its totient is φ = 21133200.

The previous prime is 21674699. The next prime is 21674749. The reversal of 21674701 is 10747612.

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 21674701 - 2¹ = 21674699 is a prime.

It is an alternating number because its digits alternate between even and odd.

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 21674701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21674761) 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, 5166 + ... + 8368.

It is an arithmetic number, because the mean of its divisors is an integer number (2777868).

Almost surely, 2^21674701 is an apocalyptic number.

It is an amenable number.

21674701 is a deficient number, since it is larger than the sum of its proper divisors (548243).

21674701 is a wasteful number, since it uses less digits than its factorization.

21674701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371.

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 21674701 is about 4655.6096271058. The cubic root of 21674701 is about 278.8160081502.

The spelling of 21674701 in words is "twenty-one million, six hundred seventy-four thousand, seven hundred one".