672391254617 has 2 divisors, whose sum is σ = 672391254618. Its totient is φ = 672391254616.

The previous prime is 672391254583. The next prime is 672391254643. The reversal of 672391254617 is 716452193276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 396073870336 + 276317384281 = 629344^2 + 525659^2 .

It is a cyclic number.

It is not a de Polignac number, because 672391254617 - 2¹⁸ = 672390992473 is a prime.

It is not a weakly prime, because it can be changed into another prime (672391254917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336195627308 + 336195627309.

It is an arithmetic number, because the mean of its divisors is an integer number (336195627309).

Almost surely, 2^672391254617 is an apocalyptic number.

It is an amenable number.

672391254617 is a deficient number, since it is larger than the sum of its proper divisors (1).

672391254617 is an equidigital number, since it uses as much as digits as its factorization.

672391254617 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The spelling of 672391254617 in words is "six hundred seventy-two billion, three hundred ninety-one million, two hundred fifty-four thousand, six hundred seventeen".