3649977 has 6 divisors (see below), whose sum is σ = 5272202. Its totient is φ = 2433312.

The previous prime is 3649967. The next prime is 3649981. The reversal of 3649977 is 7799463.

It can be written as a sum of positive squares in only one way, i.e., 3493161 + 156816 = 1869^2 + 396^2 .

It is not a de Polignac number, because 3649977 - 2⁶ = 3649913 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3649907) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 202768 + ... + 202785.

Almost surely, 2^3649977 is an apocalyptic number.

It is an amenable number.

3649977 is a deficient number, since it is larger than the sum of its proper divisors (1622225).

3649977 is a wasteful number, since it uses less digits than its factorization.

3649977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405559 (or 405556 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 3649977 is about 1910.4912980697. The cubic root of 3649977 is about 153.9678490256.

The spelling of 3649977 in words is "three million, six hundred forty-nine thousand, nine hundred seventy-seven".