662481 has 6 divisors (see below), whose sum is σ = 956930. Its totient is φ = 441648.

The previous prime is 662477. The next prime is 662483. The reversal of 662481 is 184266.

662481 is digitally balanced in base 2 and base 7, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 370881 + 291600 = 609^2 + 540^2 .

It is not a de Polignac number, because 662481 - 2² = 662477 is a prime.

It is a super-2 number, since 2×662481² = 877762150722, which contains 22 as substring.

It is a Duffinian number.

662481 is strictly pandigital in base 7.

662481 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (662483) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36796 + ... + 36813.

2⁶⁶²⁴⁸¹ is an apocalyptic number.

It is an amenable number.

662481 is a deficient number, since it is larger than the sum of its proper divisors (294449).

662481 is a wasteful number, since it uses less digits than its factorization.

662481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73615 (or 73612 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 662481 is about 813.9293581141. The cubic root of 662481 is about 87.1748366778.

The spelling of 662481 in words is "six hundred sixty-two thousand, four hundred eighty-one".