678010399 has 32 divisors (see below), whose sum is σ = 797465088. Its totient is φ = 570240000.

The previous prime is 678010387. The next prime is 678010429. The reversal of 678010399 is 993010876.

It is not a de Polignac number, because 678010399 - 2⁵ = 678010367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (678010339) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1690599 + ... + 1690999.

It is an arithmetic number, because the mean of its divisors is an integer number (24920784).

Almost surely, 2^678010399 is an apocalyptic number.

678010399 is a deficient number, since it is larger than the sum of its proper divisors (119454689).

678010399 is a wasteful number, since it uses less digits than its factorization.

678010399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 678010399 is about 26038.6328174119. The cubic root of 678010399 is about 878.5074557627.

The spelling of 678010399 in words is "six hundred seventy-eight million, ten thousand, three hundred ninety-nine".