2790678617 has 2 divisors, whose sum is σ = 2790678618. Its totient is φ = 2790678616.

The previous prime is 2790678587. The next prime is 2790678641. The reversal of 2790678617 is 7168760972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1429142416 + 1361536201 = 37804^2 + 36899^2 .

It is a cyclic number.

It is not a de Polignac number, because 2790678617 - 2²⁸ = 2522243161 is a prime.

It is a super-3 number, since 3×2790678617³ (a number of 29 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (2790678677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1395339308 + 1395339309.

It is an arithmetic number, because the mean of its divisors is an integer number (1395339309).

Almost surely, 2^2790678617 is an apocalyptic number.

It is an amenable number.

2790678617 is a deficient number, since it is larger than the sum of its proper divisors (1).

2790678617 is an equidigital number, since it uses as much as digits as its factorization.

2790678617 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1778112, while the sum is 53.

The square root of 2790678617 is about 52826.8740036735. The cubic root of 2790678617 is about 1407.8939463705.

The spelling of 2790678617 in words is "two billion, seven hundred ninety million, six hundred seventy-eight thousand, six hundred seventeen".