61201987 has 8 divisors (see below), whose sum is σ = 76303872. Its totient is φ = 47689800.

The previous prime is 61201981. The next prime is 61201991. The reversal of 61201987 is 78910216.

It is a happy number.

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 61201987 - 2³ = 61201979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61201981) 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, 397339 + ... + 397492.

It is an arithmetic number, because the mean of its divisors is an integer number (9537984).

Almost surely, 2^61201987 is an apocalyptic number.

61201987 is a deficient number, since it is larger than the sum of its proper divisors (15101885).

61201987 is a wasteful number, since it uses less digits than its factorization.

61201987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794849.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 61201987 is about 7823.1698818318. The cubic root of 61201987 is about 394.0837321075.

The spelling of 61201987 in words is "sixty-one million, two hundred one thousand, nine hundred eighty-seven".