678054137 has 8 divisors (see below), whose sum is σ = 699842400. Its totient is φ = 656609184.

The previous prime is 678054131. The next prime is 678054199. The reversal of 678054137 is 731450876.

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

It is a cyclic number.

It is not a de Polignac number, because 678054137 - 2⁶ = 678054073 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 678054094 and 678054103.

It is not an unprimeable number, because it can be changed into a prime (678054131) 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, 81812 + ... + 89717.

It is an arithmetic number, because the mean of its divisors is an integer number (87480300).

Almost surely, 2^678054137 is an apocalyptic number.

678054137 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

It is an amenable number.

678054137 is a deficient number, since it is larger than the sum of its proper divisors (21788263).

678054137 is a wasteful number, since it uses less digits than its factorization.

678054137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171655.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 678054137 is about 26039.4726713119. The cubic root of 678054137 is about 878.5263460004.

The spelling of 678054137 in words is "six hundred seventy-eight million, fifty-four thousand, one hundred thirty-seven".