667703351 has 8 divisors (see below), whose sum is σ = 778663200. Its totient is φ = 572316864.

The previous prime is 667703303. The next prime is 667703357. The reversal of 667703351 is 153307766.

It is not a de Polignac number, because 667703351 - 2⁶ = 667703287 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667703357) 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, 972986 + ... + 973671.

It is an arithmetic number, because the mean of its divisors is an integer number (97332900).

Almost surely, 2^667703351 is an apocalyptic number.

667703351 is a deficient number, since it is larger than the sum of its proper divisors (110959849).

667703351 is an equidigital number, since it uses as much as digits as its factorization.

667703351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946678 (or 1946664 counting only the distinct ones).

The product of its (nonzero) digits is 79380, while the sum is 38.

The square root of 667703351 is about 25839.9564821615. The cubic root of 667703351 is about 874.0330438173.

The spelling of 667703351 in words is "six hundred sixty-seven million, seven hundred three thousand, three hundred fifty-one".