61476109 has 6 divisors (see below), whose sum is σ = 62122830. Its totient is φ = 60831000.

The previous prime is 61476089. The next prime is 61476119. The reversal of 61476109 is 90167416.

It can be written as a sum of positive squares in only one way, i.e., 56400100 + 5076009 = 7510^2 + 2253^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61476109 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61476119) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81484 + ... + 82234.

It is an arithmetic number, because the mean of its divisors is an integer number (10353805).

Almost surely, 2^61476109 is an apocalyptic number.

It is an amenable number.

61476109 is a deficient number, since it is larger than the sum of its proper divisors (646721).

61476109 is an frugal number, since it uses more digits than its factorization.

61476109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1611 (or 860 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 61476109 is about 7840.6701881918. The cubic root of 61476109 is about 394.6712192295.

The spelling of 61476109 in words is "sixty-one million, four hundred seventy-six thousand, one hundred nine".