777793013 has 2 divisors, whose sum is σ = 777793014. Its totient is φ = 777793012.

The previous prime is 777792973. The next prime is 777793033. The reversal of 777793013 is 310397777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 442976209 + 334816804 = 21047^2 + 18298^2 .

It is a cyclic number.

It is not a de Polignac number, because 777793013 - 2¹⁶ = 777727477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (777793033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388896506 + 388896507.

It is an arithmetic number, because the mean of its divisors is an integer number (388896507).

Almost surely, 2^777793013 is an apocalyptic number.

It is an amenable number.

777793013 is a deficient number, since it is larger than the sum of its proper divisors (1).

777793013 is an equidigital number, since it uses as much as digits as its factorization.

777793013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 194481, while the sum is 44.

The square root of 777793013 is about 27888.9406934003. The cubic root of 777793013 is about 919.6473967768.

The spelling of 777793013 in words is "seven hundred seventy-seven million, seven hundred ninety-three thousand, thirteen".