61008287 has 4 divisors (see below), whose sum is σ = 62496336. Its totient is φ = 59520240.

The previous prime is 61008263. The next prime is 61008289. The reversal of 61008287 is 78280016.

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 61008287 - 2¹² = 61004191 is a prime.

It is a super-2 number, since 2×61008287² = 7444022165348738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61008289) 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, 743963 + ... + 744044.

It is an arithmetic number, because the mean of its divisors is an integer number (15624084).

Almost surely, 2^61008287 is an apocalyptic number.

61008287 is a deficient number, since it is larger than the sum of its proper divisors (1488049).

61008287 is a wasteful number, since it uses less digits than its factorization.

61008287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488048.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 61008287 is about 7810.7801787017. The cubic root of 61008287 is about 393.6675435971.

The spelling of 61008287 in words is "sixty-one million, eight thousand, two hundred eighty-seven".