672835381 has 2 divisors, whose sum is σ = 672835382. Its totient is φ = 672835380.

The previous prime is 672835363. The next prime is 672835411. The reversal of 672835381 is 183538276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 666414225 + 6421156 = 25815^2 + 2534^2 .

It is a cyclic number.

It is not a de Polignac number, because 672835381 - 2¹³ = 672827189 is a prime.

It is a super-2 number, since 2×672835381² = 905414899850830322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672830381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336417690 + 336417691.

It is an arithmetic number, because the mean of its divisors is an integer number (336417691).

Almost surely, 2^672835381 is an apocalyptic number.

It is an amenable number.

672835381 is a deficient number, since it is larger than the sum of its proper divisors (1).

672835381 is an equidigital number, since it uses as much as digits as its factorization.

672835381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 241920, while the sum is 43.

The square root of 672835381 is about 25939.0705500409. The cubic root of 672835381 is about 876.2666307657.

The spelling of 672835381 in words is "six hundred seventy-two million, eight hundred thirty-five thousand, three hundred eighty-one".