61287486 has 16 divisors (see below), whose sum is σ = 132003984. Its totient is φ = 18857664.

The previous prime is 61287481. The next prime is 61287491. The reversal of 61287486 is 68478216.

It is an interprime number because it is at equal distance from previous prime (61287481) and next prime (61287491).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61287481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392791 + ... + 392946.

It is an arithmetic number, because the mean of its divisors is an integer number (8250249).

Almost surely, 2^61287486 is an apocalyptic number.

61287486 is an abundant number, since it is smaller than the sum of its proper divisors (70716498).

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

61287486 is a wasteful number, since it uses less digits than its factorization.

61287486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785755.

The product of its digits is 129024, while the sum is 42.

The square root of 61287486 is about 7828.6324476246. The cubic root of 61287486 is about 394.2671579994.

The spelling of 61287486 in words is "sixty-one million, two hundred eighty-seven thousand, four hundred eighty-six".