2639474 has 4 divisors (see below), whose sum is σ = 3959214. Its totient is φ = 1319736.

The previous prime is 2639447. The next prime is 2639477. The reversal of 2639474 is 4749362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1708249 + 931225 = 1307^2 + 965^2 .

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (2639477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659867 + ... + 659870.

2^2639474 is an apocalyptic number.

2639474 is a deficient number, since it is larger than the sum of its proper divisors (1319740).

2639474 is a wasteful number, since it uses less digits than its factorization.

2639474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319739.

The product of its digits is 36288, while the sum is 35.

The square root of 2639474 is about 1624.6458075531. The cubic root of 2639474 is about 138.1992849940.

Adding to 2639474 its product of digits (36288), we get a palindrome (2675762).

It can be divided in two parts, 2639 and 474, that added together give a palindrome (3113).

The spelling of 2639474 in words is "two million, six hundred thirty-nine thousand, four hundred seventy-four".