2601994 has 4 divisors (see below), whose sum is σ = 3902994. Its totient is φ = 1300996.

The previous prime is 2601979. The next prime is 2601997. The reversal of 2601994 is 4991062.

It is a happy number.

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., 2601769 + 225 = 1613^2 + 15^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2601997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650497 + ... + 650500.

2^2601994 is an apocalyptic number.

2601994 is a deficient number, since it is larger than the sum of its proper divisors (1301000).

2601994 is a wasteful number, since it uses less digits than its factorization.

2601994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1300999.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2601994 is about 1613.0697443074. The cubic root of 2601994 is about 137.5420301264.

The spelling of 2601994 in words is "two million, six hundred one thousand, nine hundred ninety-four".