61229887 has 8 divisors (see below), whose sum is σ = 63995904. Its totient is φ = 58472568.

The previous prime is 61229881. The next prime is 61229891. The reversal of 61229887 is 78892216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61229887 - 2¹¹ = 61227839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61229881) 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, 15298 + ... + 18880.

It is an arithmetic number, because the mean of its divisors is an integer number (7999488).

Almost surely, 2^61229887 is an apocalyptic number.

61229887 is a deficient number, since it is larger than the sum of its proper divisors (2766017).

61229887 is a wasteful number, since it uses less digits than its factorization.

61229887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4349.

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

The square root of 61229887 is about 7824.9528433084. The cubic root of 61229887 is about 394.1436063390.

The spelling of 61229887 in words is "sixty-one million, two hundred twenty-nine thousand, eight hundred eighty-seven".