34789287661 has 4 divisors (see below), whose sum is σ = 35988918300. Its totient is φ = 33589657024.

The previous prime is 34789287653. The next prime is 34789287667. The reversal of 34789287661 is 16678298743.

It is a happy number.

34789287661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16678298743 = 19 ⋅877805197.

It can be written as a sum of positive squares in 2 ways, for example, as 12728126761 + 22061160900 = 112819^2 + 148530^2 .

It is a cyclic number.

It is not a de Polignac number, because 34789287661 - 2³ = 34789287653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 34789287661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34789287667) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 599815276 + ... + 599815333.

It is an arithmetic number, because the mean of its divisors is an integer number (8997229575).

Almost surely, 2^34789287661 is an apocalyptic number.

It is an amenable number.

34789287661 is a deficient number, since it is larger than the sum of its proper divisors (1199630639).

34789287661 is a wasteful number, since it uses less digits than its factorization.

34789287661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1199630638.

The product of its digits is 24385536, while the sum is 61.

The spelling of 34789287661 in words is "thirty-four billion, seven hundred eighty-nine million, two hundred eighty-seven thousand, six hundred sixty-one".