422656678 has 16 divisors (see below), whose sum is σ = 648730800. Its totient is φ = 206460000.

The previous prime is 422656657. The next prime is 422656679. The reversal of 422656678 is 876656224.

It is a super-3 number, since 3×422656678³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422656679) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6553 + ... + 29803.

It is an arithmetic number, because the mean of its divisors is an integer number (40545675).

Almost surely, 2^422656678 is an apocalyptic number.

422656678 is a deficient number, since it is larger than the sum of its proper divisors (226074122).

422656678 is a wasteful number, since it uses less digits than its factorization.

422656678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23463.

The product of its digits is 967680, while the sum is 46.

The square root of 422656678 is about 20558.6156635120. The cubic root of 422656678 is about 750.4629307939.

The spelling of 422656678 in words is "four hundred twenty-two million, six hundred fifty-six thousand, six hundred seventy-eight".