671542951 has 2 divisors, whose sum is σ = 671542952. Its totient is φ = 671542950.

The previous prime is 671542939. The next prime is 671542967. The reversal of 671542951 is 159245176.

671542951 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 671542951 - 2²⁹ = 134672039 is a prime.

It is a super-3 number, since 3×671542951³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671342951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335771475 + 335771476.

It is an arithmetic number, because the mean of its divisors is an integer number (335771476).

Almost surely, 2^671542951 is an apocalyptic number.

671542951 is a deficient number, since it is larger than the sum of its proper divisors (1).

671542951 is an equidigital number, since it uses as much as digits as its factorization.

671542951 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 75600, while the sum is 40.

The square root of 671542951 is about 25914.1457702159. The cubic root of 671542951 is about 875.7052060717.

The spelling of 671542951 in words is "six hundred seventy-one million, five hundred forty-two thousand, nine hundred fifty-one".