61282987 has 4 divisors (see below), whose sum is σ = 62777736. Its totient is φ = 59788240.

The previous prime is 61282973. The next prime is 61282993. The reversal of 61282987 is 78928216.

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

It is a cyclic number.

It is not a de Polignac number, because 61282987 - 2¹¹ = 61280939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61282937) 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, 747313 + ... + 747394.

It is an arithmetic number, because the mean of its divisors is an integer number (15694434).

Almost surely, 2^61282987 is an apocalyptic number.

61282987 is a deficient number, since it is larger than the sum of its proper divisors (1494749).

61282987 is a wasteful number, since it uses less digits than its factorization.

61282987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1494748.

The product of its digits is 96768, while the sum is 43.

The square root of 61282987 is about 7828.3450997002. The cubic root of 61282987 is about 394.2575102912.

The spelling of 61282987 in words is "sixty-one million, two hundred eighty-two thousand, nine hundred eighty-seven".