61098669 has 6 divisors (see below), whose sum is σ = 88253646. Its totient is φ = 40732440.

The previous prime is 61098659. The next prime is 61098683. The reversal of 61098669 is 96689016.

61098669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 46376100 + 14722569 = 6810^2 + 3837^2 .

It is not a de Polignac number, because 61098669 - 2⁸ = 61098413 is a prime.

It is a super-2 number, since 2×61098669² = 7466094707143122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61098619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3394362 + ... + 3394379.

It is an arithmetic number, because the mean of its divisors is an integer number (14708941).

Almost surely, 2^61098669 is an apocalyptic number.

It is an amenable number.

61098669 is a deficient number, since it is larger than the sum of its proper divisors (27154977).

61098669 is a wasteful number, since it uses less digits than its factorization.

61098669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6788747 (or 6788744 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 61098669 is about 7816.5637590952. The cubic root of 61098669 is about 393.8618500083.

The spelling of 61098669 in words is "sixty-one million, ninety-eight thousand, six hundred sixty-nine".