84623678 has 4 divisors (see below), whose sum is σ = 126935520. Its totient is φ = 42311838.

The previous prime is 84623639. The next prime is 84623719. The reversal of 84623678 is 87632648.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×84623678² = 14322333756495368, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21155918 + ... + 21155921.

It is an arithmetic number, because the mean of its divisors is an integer number (31733880).

Almost surely, 2^84623678 is an apocalyptic number.

84623678 is a deficient number, since it is larger than the sum of its proper divisors (42311842).

84623678 is a wasteful number, since it uses less digits than its factorization.

84623678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42311841.

The product of its digits is 387072, while the sum is 44.

The square root of 84623678 is about 9199.1128920130. The cubic root of 84623678 is about 439.0331352127.

The spelling of 84623678 in words is "eighty-four million, six hundred twenty-three thousand, six hundred seventy-eight".