3651697 has 4 divisors (see below), whose sum is σ = 4173376. Its totient is φ = 3130020.

The previous prime is 3651673. The next prime is 3651731. The reversal of 3651697 is 7961563.

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 3651697 - 2¹⁵ = 3618929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651607) 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, 260829 + ... + 260842.

It is an arithmetic number, because the mean of its divisors is an integer number (1043344).

Almost surely, 2^3651697 is an apocalyptic number.

It is an amenable number.

3651697 is a deficient number, since it is larger than the sum of its proper divisors (521679).

3651697 is an equidigital number, since it uses as much as digits as its factorization.

3651697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521678.

The product of its digits is 34020, while the sum is 37.

The square root of 3651697 is about 1910.9413910426. The cubic root of 3651697 is about 153.9920302841.

The spelling of 3651697 in words is "three million, six hundred fifty-one thousand, six hundred ninety-seven".