3688457 has 4 divisors (see below), whose sum is σ = 3697680. Its totient is φ = 3679236.

The previous prime is 3688453. The next prime is 3688463. The reversal of 3688457 is 7548863.

It is a happy number.

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: 7548863 = 7 ⋅1078409.

It is a cyclic number.

It is not a de Polignac number, because 3688457 - 2² = 3688453 is a prime.

It is a d-powerful number, because it can be written as 3¹² + 6⁸ + 8² + 8⁶ + 4⁵ + 5⁸ + 7⁷ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3688453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3983 + ... + 4820.

It is an arithmetic number, because the mean of its divisors is an integer number (924420).

Almost surely, 2^3688457 is an apocalyptic number.

It is an amenable number.

3688457 is a deficient number, since it is larger than the sum of its proper divisors (9223).

3688457 is an equidigital number, since it uses as much as digits as its factorization.

3688457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9222.

The product of its digits is 161280, while the sum is 41.

The square root of 3688457 is about 1920.5356023776. The cubic root of 3688457 is about 154.5070290019.

The spelling of 3688457 in words is "three million, six hundred eighty-eight thousand, four hundred fifty-seven".