60863981 has 4 divisors (see below), whose sum is σ = 62012412. Its totient is φ = 59715552.

The previous prime is 60863977. The next prime is 60863993. The reversal of 60863981 is 18936806.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 50197225 + 10666756 = 7085^2 + 3266^2 .

It is a cyclic number.

It is not a de Polignac number, because 60863981 - 2² = 60863977 is a prime.

It is a super-2 number, since 2×60863981² = 7408848366336722, 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 (60863941) 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, 574136 + ... + 574241.

It is an arithmetic number, because the mean of its divisors is an integer number (15503103).

Almost surely, 2^60863981 is an apocalyptic number.

It is an amenable number.

60863981 is a deficient number, since it is larger than the sum of its proper divisors (1148431).

60863981 is a wasteful number, since it uses less digits than its factorization.

60863981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148430.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 60863981 is about 7801.5370921377. The cubic root of 60863981 is about 393.3569112714.

The spelling of 60863981 in words is "sixty million, eight hundred sixty-three thousand, nine hundred eighty-one".