678244212 has 24 divisors (see below), whose sum is σ = 1758411200. Its totient is φ = 226081368.

The previous prime is 678244207. The next prime is 678244213. The reversal of 678244212 is 212442876.

It is a super-2 number, since 2×678244212² = 920030422223001888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678244213) 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, 3139912 + ... + 3140127.

Almost surely, 2^678244212 is an apocalyptic number.

It is an amenable number.

678244212 is an abundant number, since it is smaller than the sum of its proper divisors (1080166988).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

678244212 is a wasteful number, since it uses less digits than its factorization.

678244212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6280052 (or 6280044 counting only the distinct ones).

The product of its digits is 43008, while the sum is 36.

The square root of 678244212 is about 26043.1221630587. The cubic root of 678244212 is about 878.6084290698.

The spelling of 678244212 in words is "six hundred seventy-eight million, two hundred forty-four thousand, two hundred twelve".