673400378 has 16 divisors (see below), whose sum is σ = 1157455680. Its totient is φ = 287836416.

The previous prime is 673400341. The next prime is 673400389. The reversal of 673400378 is 873004376.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58151 + ... + 68762.

It is an arithmetic number, because the mean of its divisors is an integer number (72340980).

Almost surely, 2^673400378 is an apocalyptic number.

673400378 is a deficient number, since it is larger than the sum of its proper divisors (484055302).

673400378 is a wasteful number, since it uses less digits than its factorization.

673400378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127301.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 673400378 is about 25949.9591136479. The cubic root of 673400378 is about 876.5118366099.

The spelling of 673400378 in words is "six hundred seventy-three million, four hundred thousand, three hundred seventy-eight".