4007691 has 16 divisors (see below), whose sum is σ = 5982720. Its totient is φ = 2651400.

The previous prime is 4007687. The next prime is 4007723. The reversal of 4007691 is 1967004.

It is not a de Polignac number, because 4007691 - 2² = 4007687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (4007611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3586 + ... + 4568.

It is an arithmetic number, because the mean of its divisors is an integer number (373920).

Almost surely, 2^4007691 is an apocalyptic number.

4007691 is a deficient number, since it is larger than the sum of its proper divisors (1975029).

4007691 is a wasteful number, since it uses less digits than its factorization.

4007691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143 (or 1137 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 4007691 is about 2001.9218266456. The cubic root of 4007691 is about 158.8417792391.

The spelling of 4007691 in words is "four million, seven thousand, six hundred ninety-one".