637474 has 4 divisors (see below), whose sum is σ = 956214. Its totient is φ = 318736.

The previous prime is 637471. The next prime is 637489. The reversal of 637474 is 474736.

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., 483025 + 154449 = 695^2 + 393^2 .

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 a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (637471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159367 + ... + 159370.

2⁶³⁷⁴⁷⁴ is an apocalyptic number.

637474 is a deficient number, since it is larger than the sum of its proper divisors (318740).

637474 is a wasteful number, since it uses less digits than its factorization.

637474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318739.

The product of its digits is 14112, while the sum is 31.

The square root of 637474 is about 798.4196891360. The cubic root of 637474 is about 86.0638609860.

It can be divided in two parts, 637 and 474, that added together give a palindrome (1111).

The spelling of 637474 in words is "six hundred thirty-seven thousand, four hundred seventy-four".