678081830 has 8 divisors (see below), whose sum is σ = 1220547312. Its totient is φ = 271232728.

The previous prime is 678081827. The next prime is 678081847. The reversal of 678081830 is 38180876.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×678081830² = 919589936352297800, 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 in 3 ways as a sum of consecutive naturals, for example, 33904082 + ... + 33904101.

It is an arithmetic number, because the mean of its divisors is an integer number (152568414).

Almost surely, 2^678081830 is an apocalyptic number.

678081830 is a deficient number, since it is larger than the sum of its proper divisors (542465482).

678081830 is a wasteful number, since it uses less digits than its factorization.

678081830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67808190.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 678081830 is about 26040.0044162823. The cubic root of 678081830 is about 878.5383060577.

The spelling of 678081830 in words is "six hundred seventy-eight million, eighty-one thousand, eight hundred thirty".