61532687 has 2 divisors, whose sum is σ = 61532688. Its totient is φ = 61532686.

The previous prime is 61532641. The next prime is 61532689. The reversal of 61532687 is 78623516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61532687 - 2⁶ = 61532623 is a prime.

It is a super-3 number, since 3×61532687³ (a number of 24 digits) contains 333 as substring.

Together with 61532689, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61532687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61532689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30766343 + 30766344.

It is an arithmetic number, because the mean of its divisors is an integer number (30766344).

Almost surely, 2^61532687 is an apocalyptic number.

61532687 is a deficient number, since it is larger than the sum of its proper divisors (1).

61532687 is an equidigital number, since it uses as much as digits as its factorization.

61532687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 61532687 is about 7844.2773408390. The cubic root of 61532687 is about 394.7922573688.

The spelling of 61532687 in words is "sixty-one million, five hundred thirty-two thousand, six hundred eighty-seven".