678862051 has 16 divisors (see below), whose sum is σ = 816258240. Its totient is φ = 552337920.

The previous prime is 678861991. The next prime is 678862057. The reversal of 678862051 is 150268876.

It is a cyclic number.

It is not a de Polignac number, because 678862051 - 2⁷ = 678861923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 678861989 and 678862007.

It is not an unprimeable number, because it can be changed into a prime (678862057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21346 + ... + 42583.

It is an arithmetic number, because the mean of its divisors is an integer number (51016140).

Almost surely, 2^678862051 is an apocalyptic number.

678862051 is a deficient number, since it is larger than the sum of its proper divisors (137396189).

678862051 is a wasteful number, since it uses less digits than its factorization.

678862051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64014.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 678862051 is about 26054.9813087632. The cubic root of 678862051 is about 878.8751342850.

The spelling of 678862051 in words is "six hundred seventy-eight million, eight hundred sixty-two thousand, fifty-one".