3691616 has 12 divisors (see below), whose sum is σ = 7267932. Its totient is φ = 1845792.

The previous prime is 3691603. The next prime is 3691619. The reversal of 3691616 is 6161963.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 115363 = 3691616 / (3 + 6 + 9 + 1 + 6 + 1 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3691619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57650 + ... + 57713.

It is an arithmetic number, because the mean of its divisors is an integer number (605661).

Almost surely, 2^3691616 is an apocalyptic number.

It is an amenable number.

3691616 is a deficient number, since it is larger than the sum of its proper divisors (3576316).

3691616 is a wasteful number, since it uses less digits than its factorization.

3691616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115373 (or 115365 counting only the distinct ones).

The product of its digits is 5832, while the sum is 32.

The square root of 3691616 is about 1921.3578531861. The cubic root of 3691616 is about 154.5511258902.

The spelling of 3691616 in words is "three million, six hundred ninety-one thousand, six hundred sixteen".