673407345 has 16 divisors (see below), whose sum is σ = 1160332992. Its totient is φ = 331523520.

The previous prime is 673407283. The next prime is 673407353. The reversal of 673407345 is 543704376.

It is not a de Polignac number, because 673407345 - 2¹² = 673403249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1726491 + ... + 1726880.

It is an arithmetic number, because the mean of its divisors is an integer number (72520812).

Almost surely, 2^673407345 is an apocalyptic number.

673407345 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

673407345 is a deficient number, since it is larger than the sum of its proper divisors (486925647).

673407345 is a wasteful number, since it uses less digits than its factorization.

673407345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453392.

The product of its (nonzero) digits is 211680, while the sum is 39.

The square root of 673407345 is about 25950.0933524332. The cubic root of 673407345 is about 876.5148593965.

The spelling of 673407345 in words is "six hundred seventy-three million, four hundred seven thousand, three hundred forty-five".