6694551 has 12 divisors (see below), whose sum is σ = 9747712. Its totient is φ = 4427136.

The previous prime is 6694537. The next prime is 6694561. The reversal of 6694551 is 1554966.

It is not a de Polignac number, because 6694551 - 2¹⁵ = 6661783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6694511) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1786 + ... + 4071.

Almost surely, 2^6694551 is an apocalyptic number.

6694551 is a deficient number, since it is larger than the sum of its proper divisors (3053161).

6694551 is a wasteful number, since it uses less digits than its factorization.

6694551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5990 (or 5987 counting only the distinct ones).

The product of its digits is 32400, while the sum is 36.

The square root of 6694551 is about 2587.3830408349. The cubic root of 6694551 is about 188.4692424023.

The spelling of 6694551 in words is "six million, six hundred ninety-four thousand, five hundred fifty-one".