635464 has 8 divisors (see below), whose sum is σ = 1191510. Its totient is φ = 317728.

The previous prime is 635461. The next prime is 635471. The reversal of 635464 is 464536.

It can be written as a sum of positive squares in only one way, i.e., 432964 + 202500 = 658^2 + 450^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (635461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39709 + ... + 39724.

2⁶³⁵⁴⁶⁴ is an apocalyptic number.

It is an amenable number.

635464 is a deficient number, since it is larger than the sum of its proper divisors (556046).

635464 is a wasteful number, since it uses less digits than its factorization.

635464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79439 (or 79435 counting only the distinct ones).

The product of its digits is 8640, while the sum is 28.

The square root of 635464 is about 797.1599588539. The cubic root of 635464 is about 85.9733106292.

The spelling of 635464 in words is "six hundred thirty-five thousand, four hundred sixty-four".