655432 has 8 divisors (see below), whose sum is σ = 1228950. Its totient is φ = 327712.

The previous prime is 655399. The next prime is 655439. The reversal of 655432 is 234556.

It can be written as a sum of positive squares in only one way, i.e., 617796 + 37636 = 786^2 + 194^2 .

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

It is a super-2 number, since 2×655432² = 859182213248, which contains 22 as substring.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 655397 and 655406.

It is not an unprimeable number, because it can be changed into a prime (655439) by changing a digit.

655432 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40957 + ... + 40972.

2⁶⁵⁵⁴³² is an apocalyptic number.

It is an amenable number.

655432 is a deficient number, since it is larger than the sum of its proper divisors (573518).

655432 is a wasteful number, since it uses less digits than its factorization.

655432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81935 (or 81931 counting only the distinct ones).

The product of its digits is 3600, while the sum is 25.

The square root of 655432 is about 809.5875493114. The cubic root of 655432 is about 86.8645445727.

Adding to 655432 its reverse (234556), we get a palindrome (889988).

The spelling of 655432 in words is "six hundred fifty-five thousand, four hundred thirty-two".