655806434 has 4 divisors (see below), whose sum is σ = 983709654. Its totient is φ = 327903216.

The previous prime is 655806407. The next prime is 655806479. The reversal of 655806434 is 434608556.

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., 401882209 + 253924225 = 20047^2 + 15935^2 .

It is a junction number, because it is equal to n+sod(n) for n = 655806391 and 655806400.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163951607 + ... + 163951610.

Almost surely, 2^655806434 is an apocalyptic number.

655806434 is a deficient number, since it is larger than the sum of its proper divisors (327903220).

655806434 is a wasteful number, since it uses less digits than its factorization.

655806434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327903219.

The product of its (nonzero) digits is 345600, while the sum is 41.

The square root of 655806434 is about 25608.7179296426. The cubic root of 655806434 is about 868.8108269678.

The spelling of 655806434 in words is "six hundred fifty-five million, eight hundred six thousand, four hundred thirty-four".