678506073 has 32 divisors (see below), whose sum is σ = 1062352896. Its totient is φ = 377129088.

The previous prime is 678506071. The next prime is 678506107. The reversal of 678506073 is 370605876.

It is not a de Polignac number, because 678506073 - 2¹ = 678506071 is a prime.

It is not an unprimeable number, because it can be changed into a prime (678506071) 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, 236061 + ... + 238917.

It is an arithmetic number, because the mean of its divisors is an integer number (33198528).

Almost surely, 2^678506073 is an apocalyptic number.

It is an amenable number.

678506073 is a deficient number, since it is larger than the sum of its proper divisors (383846823).

678506073 is a wasteful number, since it uses less digits than its factorization.

678506073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3173.

The product of its (nonzero) digits is 211680, while the sum is 42.

The square root of 678506073 is about 26048.1491281051. The cubic root of 678506073 is about 878.7214875005.

The spelling of 678506073 in words is "six hundred seventy-eight million, five hundred six thousand, seventy-three".