61146680 has 32 divisors (see below), whose sum is σ = 157235040. Its totient is φ = 20964480.

The previous prime is 61146667. The next prime is 61146689. The reversal of 61146680 is 8664116.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61146689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108911 + ... + 109470.

It is an arithmetic number, because the mean of its divisors is an integer number (4913595).

Almost surely, 2^61146680 is an apocalyptic number.

It is an amenable number.

61146680 is an abundant number, since it is smaller than the sum of its proper divisors (96088360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61146680 is a wasteful number, since it uses less digits than its factorization.

61146680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218399 (or 218395 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 61146680 is about 7819.6342625471. The cubic root of 61146680 is about 393.9649878273.

The spelling of 61146680 in words is "sixty-one million, one hundred forty-six thousand, six hundred eighty".