2145674 has 4 divisors (see below), whose sum is σ = 3218514. Its totient is φ = 1072836.

The previous prime is 2145643. The next prime is 2145677. The reversal of 2145674 is 4765412.

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., 1545049 + 600625 = 1243^2 + 775^2 .

It is an alternating number because its digits alternate between even and odd.

It is not an unprimeable number, because it can be changed into a prime (2145677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536417 + ... + 536420.

2^2145674 is an apocalyptic number.

2145674 is a deficient number, since it is larger than the sum of its proper divisors (1072840).

2145674 is a wasteful number, since it uses less digits than its factorization.

2145674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1072839.

The product of its digits is 6720, while the sum is 29.

The square root of 2145674 is about 1464.8119333211. The cubic root of 2145674 is about 128.9796654846.

The spelling of 2145674 in words is "two million, one hundred forty-five thousand, six hundred seventy-four".