7140691 has 4 divisors (see below), whose sum is σ = 7146432. Its totient is φ = 7134952.

The previous prime is 7140689. The next prime is 7140701. The reversal of 7140691 is 1960417.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 7140691 - 2¹ = 7140689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7140611) 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, 136 + ... + 3781.

It is an arithmetic number, because the mean of its divisors is an integer number (1786608).

Almost surely, 2^7140691 is an apocalyptic number.

7140691 is a deficient number, since it is larger than the sum of its proper divisors (5741).

7140691 is a wasteful number, since it uses less digits than its factorization.

7140691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5740.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 7140691 is about 2672.2071401746. The cubic root of 7140691 is about 192.5662087429.

It can be divided in two parts, 71406 and 91, that multiplied together give a palindrome (6497946).

The spelling of 7140691 in words is "seven million, one hundred forty thousand, six hundred ninety-one".