672521519 has 2 divisors, whose sum is σ = 672521520. Its totient is φ = 672521518.

The previous prime is 672521491. The next prime is 672521557. The reversal of 672521519 is 915125276.

It is a happy number.

It is an a-pointer prime, because the next prime (672521557) can be obtained adding 672521519 to its sum of digits (38).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 672521519 - 2⁸ = 672521263 is a prime.

It is a super-2 number, since 2×672521519² = 904570387036134722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (672521569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336260759 + 336260760.

It is an arithmetic number, because the mean of its divisors is an integer number (336260760).

Almost surely, 2^672521519 is an apocalyptic number.

672521519 is a deficient number, since it is larger than the sum of its proper divisors (1).

672521519 is an equidigital number, since it uses as much as digits as its factorization.

672521519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 37800, while the sum is 38.

The square root of 672521519 is about 25933.0198588595. The cubic root of 672521519 is about 876.1303569308.

The spelling of 672521519 in words is "six hundred seventy-two million, five hundred twenty-one thousand, five hundred nineteen".