678373453 has 2 divisors, whose sum is σ = 678373454. Its totient is φ = 678373452.

The previous prime is 678373441. The next prime is 678373471. The reversal of 678373453 is 354373876.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 393506569 + 284866884 = 19837^2 + 16878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-678373453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (678373483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339186726 + 339186727.

It is an arithmetic number, because the mean of its divisors is an integer number (339186727).

Almost surely, 2^678373453 is an apocalyptic number.

It is an amenable number.

678373453 is a deficient number, since it is larger than the sum of its proper divisors (1).

678373453 is an equidigital number, since it uses as much as digits as its factorization.

678373453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1270080, while the sum is 46.

The square root of 678373453 is about 26045.6033333843. The cubic root of 678373453 is about 878.6642324801.

The spelling of 678373453 in words is "six hundred seventy-eight million, three hundred seventy-three thousand, four hundred fifty-three".