61987363 has 4 divisors (see below), whose sum is σ = 62174968. Its totient is φ = 61799760.

The previous prime is 61987361. The next prime is 61987379. The reversal of 61987363 is 36378916.

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 61987363 - 2¹ = 61987361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61987361) 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, 93306 + ... + 93967.

It is an arithmetic number, because the mean of its divisors is an integer number (15543742).

Almost surely, 2^61987363 is an apocalyptic number.

61987363 is a deficient number, since it is larger than the sum of its proper divisors (187605).

61987363 is a wasteful number, since it uses less digits than its factorization.

61987363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187604.

The product of its digits is 163296, while the sum is 43.

The square root of 61987363 is about 7873.2053828158. The cubic root of 61987363 is about 395.7622688848.

The spelling of 61987363 in words is "sixty-one million, nine hundred eighty-seven thousand, three hundred sixty-three".