61676513 has 4 divisors (see below), whose sum is σ = 61851588. Its totient is φ = 61501440.

The previous prime is 61676509. The next prime is 61676567. The reversal of 61676513 is 31567616.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 15816529 + 45859984 = 3977^2 + 6772^2 .

It is a cyclic number.

It is not a de Polignac number, because 61676513 - 2² = 61676509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61676213) 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, 87008 + ... + 87713.

It is an arithmetic number, because the mean of its divisors is an integer number (15462897).

Almost surely, 2^61676513 is an apocalyptic number.

It is an amenable number.

61676513 is a deficient number, since it is larger than the sum of its proper divisors (175075).

61676513 is a wasteful number, since it uses less digits than its factorization.

61676513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175074.

The product of its digits is 22680, while the sum is 35.

The square root of 61676513 is about 7853.4395649295. The cubic root of 61676513 is about 395.0996127557.

The spelling of 61676513 in words is "sixty-one million, six hundred seventy-six thousand, five hundred thirteen".