655378 has 4 divisors (see below), whose sum is σ = 983070. Its totient is φ = 327688.

The previous prime is 655373. The next prime is 655379. The reversal of 655378 is 873556.

It is a happy number.

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., 431649 + 223729 = 657^2 + 473^2 .

It is not an unprimeable number, because it can be changed into a prime (655373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163843 + ... + 163846.

655378 is a Friedman number, since it can be written as 87^(6-3)-5^5, using all its digits and the basic arithmetic operations.

2⁶⁵⁵³⁷⁸ is an apocalyptic number.

655378 is a deficient number, since it is larger than the sum of its proper divisors (327692).

655378 is a wasteful number, since it uses less digits than its factorization.

655378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327691.

The product of its digits is 25200, while the sum is 34.

The square root of 655378 is about 809.5541983092. The cubic root of 655378 is about 86.8621589633.

The spelling of 655378 in words is "six hundred fifty-five thousand, three hundred seventy-eight".