3642257 has 4 divisors (see below), whose sum is σ = 3800640. Its totient is φ = 3483876.

The previous prime is 3642251. The next prime is 3642269. The reversal of 3642257 is 7522463.

3642257 = 89² + 90² + ... + 226².

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.

It is a cyclic number.

It is not a de Polignac number, because 3642257 - 2⁴ = 3642241 is a prime.

It is a d-powerful number, because it can be written as 3⁵ + 6⁸ + 4⁵ + 2³ + 2¹³ + 5⁹ + 7² .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3642251) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79157 + ... + 79202.

It is an arithmetic number, because the mean of its divisors is an integer number (950160).

Almost surely, 2^3642257 is an apocalyptic number.

It is an amenable number.

3642257 is a deficient number, since it is larger than the sum of its proper divisors (158383).

3642257 is a wasteful number, since it uses less digits than its factorization.

3642257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158382.

The product of its digits is 10080, while the sum is 29.

The square root of 3642257 is about 1908.4698058916. The cubic root of 3642257 is about 153.8592208709.

The spelling of 3642257 in words is "three million, six hundred forty-two thousand, two hundred fifty-seven".