3653974 has 4 divisors (see below), whose sum is σ = 5480964. Its totient is φ = 1826986.

The previous prime is 3653959. The next prime is 3653977. The reversal of 3653974 is 4793563.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4793563 = 61 ⋅78583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3653977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 913492 + ... + 913495.

It is an arithmetic number, because the mean of its divisors is an integer number (1370241).

Almost surely, 2^3653974 is an apocalyptic number.

3653974 is a deficient number, since it is larger than the sum of its proper divisors (1826990).

3653974 is a wasteful number, since it uses less digits than its factorization.

3653974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1826989.

The product of its digits is 68040, while the sum is 37.

The square root of 3653974 is about 1911.5370778512. The cubic root of 3653974 is about 154.0240306571.

The spelling of 3653974 in words is "three million, six hundred fifty-three thousand, nine hundred seventy-four".