3687257 has 8 divisors (see below), whose sum is σ = 4247232. Its totient is φ = 3135600.

The previous prime is 3687251. The next prime is 3687287. The reversal of 3687257 is 7527863.

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 3687257 - 2⁴ = 3687241 is a prime.

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 3687257.

It is not an unprimeable number, because it can be changed into a prime (3687251) 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, 1094 + ... + 2927.

It is an arithmetic number, because the mean of its divisors is an integer number (530904).

Almost surely, 2^3687257 is an apocalyptic number.

It is an amenable number.

3687257 is a deficient number, since it is larger than the sum of its proper divisors (559975).

3687257 is a wasteful number, since it uses less digits than its factorization.

3687257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159.

The product of its digits is 70560, while the sum is 38.

The square root of 3687257 is about 1920.2231641140. The cubic root of 3687257 is about 154.4902714485.

Subtracting 3687257 from its reverse (7527863), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 3687257 in words is "three million, six hundred eighty-seven thousand, two hundred fifty-seven".