3721567 has 4 divisors (see below), whose sum is σ = 3756456. Its totient is φ = 3686680.

The previous prime is 3721559. The next prime is 3721583. The reversal of 3721567 is 7651273.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3721567 - 2³ = 3721559 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3721537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17284 + ... + 17497.

It is an arithmetic number, because the mean of its divisors is an integer number (939114).

Almost surely, 2^3721567 is an apocalyptic number.

3721567 is a deficient number, since it is larger than the sum of its proper divisors (34889).

3721567 is a wasteful number, since it uses less digits than its factorization.

3721567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34888.

The product of its digits is 8820, while the sum is 31.

The square root of 3721567 is about 1929.1363352547. The cubic root of 3721567 is about 154.9679711830.

The spelling of 3721567 in words is "three million, seven hundred twenty-one thousand, five hundred sixty-seven".