3745657 has 4 divisors (see below), whose sum is σ = 3755920. Its totient is φ = 3735396.

The previous prime is 3745649. The next prime is 3745663. The reversal of 3745657 is 7565473.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7565473 = 229 ⋅33037.

It is a cyclic number.

It is not a de Polignac number, because 3745657 - 2³ = 3745649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3745607) 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, 4563 + ... + 5320.

It is an arithmetic number, because the mean of its divisors is an integer number (938980).

Almost surely, 2^3745657 is an apocalyptic number.

It is an amenable number.

3745657 is a deficient number, since it is larger than the sum of its proper divisors (10263).

3745657 is an equidigital number, since it uses as much as digits as its factorization.

3745657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10262.

The product of its digits is 88200, while the sum is 37.

The square root of 3745657 is about 1935.3699904669. The cubic root of 3745657 is about 155.3016256369.

The spelling of 3745657 in words is "three million, seven hundred forty-five thousand, six hundred fifty-seven".