2639197 has 8 divisors (see below), whose sum is σ = 2922912. Its totient is φ = 2362800.

The previous prime is 2639183. The next prime is 2639201. The reversal of 2639197 is 7919362.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2639197 - 2⁷ = 2639069 is a prime.

It is a Duffinian number.

2639197 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1054 + ... + 2527.

It is an arithmetic number, because the mean of its divisors is an integer number (365364).

2^2639197 is an apocalyptic number.

It is an amenable number.

2639197 is a deficient number, since it is larger than the sum of its proper divisors (283715).

2639197 is a wasteful number, since it uses less digits than its factorization.

2639197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3659.

The product of its digits is 20412, while the sum is 37.

The square root of 2639197 is about 1624.5605559658. The cubic root of 2639197 is about 138.1944503766.

The spelling of 2639197 in words is "two million, six hundred thirty-nine thousand, one hundred ninety-seven".