3639977 has 4 divisors (see below), whose sum is σ = 3970896. Its totient is φ = 3309060.

The previous prime is 3639973. The next prime is 3639983. The reversal of 3639977 is 7799363.

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 3639977 - 2² = 3639973 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3639971) 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, 165443 + ... + 165464.

It is an arithmetic number, because the mean of its divisors is an integer number (992724).

Almost surely, 2^3639977 is an apocalyptic number.

It is an amenable number.

3639977 is a deficient number, since it is larger than the sum of its proper divisors (330919).

3639977 is a wasteful number, since it uses less digits than its factorization.

3639977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330918.

The product of its digits is 214326, while the sum is 44.

The square root of 3639977 is about 1907.8723751866. The cubic root of 3639977 is about 153.8271096234.

The spelling of 3639977 in words is "three million, six hundred thirty-nine thousand, nine hundred seventy-seven".