3691011 has 4 divisors (see below), whose sum is σ = 4921352. Its totient is φ = 2460672.

The previous prime is 3691007. The next prime is 3691013. The reversal of 3691011 is 1101963.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1101963 = 3 ⋅367321.

It is not a de Polignac number, because 3691011 - 2² = 3691007 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3691013) 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, 615166 + ... + 615171.

It is an arithmetic number, because the mean of its divisors is an integer number (1230338).

Almost surely, 2^3691011 is an apocalyptic number.

3691011 is a deficient number, since it is larger than the sum of its proper divisors (1230341).

3691011 is a wasteful number, since it uses less digits than its factorization.

3691011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1230340.

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 3691011 is about 1921.2004059962. The cubic root of 3691011 is about 154.5426825654.

Adding to 3691011 its reverse (1101963), we get a palindrome (4792974).

The spelling of 3691011 in words is "three million, six hundred ninety-one thousand, eleven".