2639974 has 8 divisors (see below), whose sum is σ = 4168440. Its totient is φ = 1250496.

The previous prime is 2639971. The next prime is 2639999. The reversal of 2639974 is 4799362.

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

It is a d-powerful number, because it can be written as 2²¹ + 6³ + 3⁷ + 9⁴ + 9⁶ + 7⁴ + 4² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639971) 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, 34699 + ... + 34774.

It is an arithmetic number, because the mean of its divisors is an integer number (521055).

2^2639974 is an apocalyptic number.

2639974 is a deficient number, since it is larger than the sum of its proper divisors (1528466).

2639974 is a wasteful number, since it uses less digits than its factorization.

2639974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69494.

The product of its digits is 81648, while the sum is 40.

The square root of 2639974 is about 1624.7996799606. The cubic root of 2639974 is about 138.2080108841.

It can be divided in two parts, 26 and 39974, that added together give a square (40000 = 200²).

The spelling of 2639974 in words is "two million, six hundred thirty-nine thousand, nine hundred seventy-four".