3730639 has 8 divisors (see below), whose sum is σ = 4090320. Its totient is φ = 3374400.

The previous prime is 3730619. The next prime is 3730651. The reversal of 3730639 is 9360373.

It is a happy number.

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 3730639 - 2⁵ = 3730607 is a prime.

It is a Duffinian number.

3730639 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 3730639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3730619) 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, 1779 + ... + 3259.

It is an arithmetic number, because the mean of its divisors is an integer number (511290).

Almost surely, 2^3730639 is an apocalyptic number.

3730639 is a deficient number, since it is larger than the sum of its proper divisors (359681).

3730639 is a wasteful number, since it uses less digits than its factorization.

3730639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1721.

The product of its (nonzero) digits is 10206, while the sum is 31.

The square root of 3730639 is about 1931.4862153275. The cubic root of 3730639 is about 155.0937899241.

The spelling of 3730639 in words is "three million, seven hundred thirty thousand, six hundred thirty-nine".