3649371 has 8 divisors (see below), whose sum is σ = 5308224. Its totient is φ = 2211720.

The previous prime is 3649363. The next prime is 3649397. The reversal of 3649371 is 1739463.

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

It is not a de Polignac number, because 3649371 - 2³ = 3649363 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 110587 = 3649371 / (3 + 6 + 4 + 9 + 3 + 7 + 1).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3649301) 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, 55261 + ... + 55326.

It is an arithmetic number, because the mean of its divisors is an integer number (663528).

Almost surely, 2^3649371 is an apocalyptic number.

3649371 is a deficient number, since it is larger than the sum of its proper divisors (1658853).

3649371 is a wasteful number, since it uses less digits than its factorization.

3649371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110601.

The product of its digits is 13608, while the sum is 33.

The square root of 3649371 is about 1910.3326935380. The cubic root of 3649371 is about 153.9593275398.

The spelling of 3649371 in words is "three million, six hundred forty-nine thousand, three hundred seventy-one".