672053777 has 2 divisors, whose sum is σ = 672053778. Its totient is φ = 672053776.

The previous prime is 672053749. The next prime is 672053821. The reversal of 672053777 is 777350276.

It is a Cunningham number, because it is equal to 25924²+1.

It is an a-pointer prime, because the next prime (672053821) can be obtained adding 672053777 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 672053776 + 1 = 25924^2 + 1^2 .

It is a cyclic number.

It is not a de Polignac number, because 672053777 - 2⁸ = 672053521 is a prime.

It is equal to p_34879391 and since 672053777 and 34879391 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (672053747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336026888 + 336026889.

It is an arithmetic number, because the mean of its divisors is an integer number (336026889).

Almost surely, 2^672053777 is an apocalyptic number.

It is an amenable number.

672053777 is a deficient number, since it is larger than the sum of its proper divisors (1).

672053777 is an equidigital number, since it uses as much as digits as its factorization.

672053777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432180, while the sum is 44.

The square root of 672053777 is about 25924.0000192871. Note that the first 4 decimals coincide. The cubic root of 672053777 is about 875.9271921759.

The spelling of 672053777 in words is "six hundred seventy-two million, fifty-three thousand, seven hundred seventy-seven".