549964678 has 4 divisors (see below), whose sum is σ = 824947020. Its totient is φ = 274982338.

The previous prime is 549964631. The next prime is 549964687. The reversal of 549964678 is 876469945.

It is a happy number.

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

It is a super-2 number, since 2×549964678² = 604922294095287368, 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, 137491168 + ... + 137491171.

It is an arithmetic number, because the mean of its divisors is an integer number (206236755).

Almost surely, 2^549964678 is an apocalyptic number.

549964678 is a deficient number, since it is larger than the sum of its proper divisors (274982342).

549964678 is a wasteful number, since it uses less digits than its factorization.

549964678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274982341.

The product of its digits is 13063680, while the sum is 58.

The square root of 549964678 is about 23451.3257194556. The cubic root of 549964678 is about 819.3037307913.

The spelling of 549964678 in words is "five hundred forty-nine million, nine hundred sixty-four thousand, six hundred seventy-eight".