672557377 has 2 divisors, whose sum is σ = 672557378. Its totient is φ = 672557376.

The previous prime is 672557371. The next prime is 672557393. The reversal of 672557377 is 773755276.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 652495936 + 20061441 = 25544^2 + 4479^2 .

It is a cyclic number.

It is not a de Polignac number, because 672557377 - 2¹¹ = 672555329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 672557377.

It is not a weakly prime, because it can be changed into another prime (672557371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336278688 + 336278689.

It is an arithmetic number, because the mean of its divisors is an integer number (336278689).

Almost surely, 2^672557377 is an apocalyptic number.

It is an amenable number.

672557377 is a deficient number, since it is larger than the sum of its proper divisors (1).

672557377 is an equidigital number, since it uses as much as digits as its factorization.

672557377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160900, while the sum is 49.

The square root of 672557377 is about 25933.7112076155. The cubic root of 672557377 is about 876.1459280429.

The spelling of 672557377 in words is "six hundred seventy-two million, five hundred fifty-seven thousand, three hundred seventy-seven".