345488777 has 2 divisors, whose sum is σ = 345488778. Its totient is φ = 345488776.

The previous prime is 345488749. The next prime is 345488791. The reversal of 345488777 is 777884543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 246207481 + 99281296 = 15691^2 + 9964^2 .

It is a cyclic number.

It is not a de Polignac number, because 345488777 - 2¹² = 345484681 is a prime.

It is not a weakly prime, because it can be changed into another prime (345488797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172744388 + 172744389.

It is an arithmetic number, because the mean of its divisors is an integer number (172744389).

Almost surely, 2^345488777 is an apocalyptic number.

It is an amenable number.

345488777 is a deficient number, since it is larger than the sum of its proper divisors (1).

345488777 is an equidigital number, since it uses as much as digits as its factorization.

345488777 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5268480, while the sum is 53.

The square root of 345488777 is about 18587.3283986699. The cubic root of 345488777 is about 701.6889671435.

The spelling of 345488777 in words is "three hundred forty-five million, four hundred eighty-eight thousand, seven hundred seventy-seven".