656454 has 16 divisors (see below), whose sum is σ = 1348848. Its totient is φ = 212832.

The previous prime is 656429. The next prime is 656459. The reversal of 656454 is 454656.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 656454.

It is not an unprimeable number, because it can be changed into a prime (656459) by changing a digit.

656454 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is an upside-down number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1257 + ... + 1700.

It is an arithmetic number, because the mean of its divisors is an integer number (84303).

2⁶⁵⁶⁴⁵⁴ is an apocalyptic number.

656454 is an abundant number, since it is smaller than the sum of its proper divisors (692394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656454 is a wasteful number, since it uses less digits than its factorization.

656454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2999.

The product of its digits is 14400, while the sum is 30.

The square root of 656454 is about 810.2184890509. The cubic root of 656454 is about 86.9096697535.

It can be divided in two parts, 6 and 56454, that multiplied together give a square (338724 = 582²).

The spelling of 656454 in words is "six hundred fifty-six thousand, four hundred fifty-four".