6671657 has 4 divisors (see below), whose sum is σ = 6765696. Its totient is φ = 6577620.

The previous prime is 6671647. The next prime is 6671663. The reversal of 6671657 is 7561766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6671657 - 2⁶ = 6671593 is a prime.

It is a super-2 number, since 2×6671657² = 89022014251298, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6671657.

It is not an unprimeable number, because it can be changed into a prime (6671617) 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, 46913 + ... + 47054.

It is an arithmetic number, because the mean of its divisors is an integer number (1691424).

Almost surely, 2^6671657 is an apocalyptic number.

It is an amenable number.

6671657 is a deficient number, since it is larger than the sum of its proper divisors (94039).

6671657 is an equidigital number, since it uses as much as digits as its factorization.

6671657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94038.

The product of its digits is 52920, while the sum is 38.

The square root of 6671657 is about 2582.9550905891. The cubic root of 6671657 is about 188.2541548982.

The spelling of 6671657 in words is "six million, six hundred seventy-one thousand, six hundred fifty-seven".