62987681 has 4 divisors (see below), whose sum is σ = 65159700. Its totient is φ = 60815664.

The previous prime is 62987677. The next prime is 62987713. The reversal of 62987681 is 18678926.

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 47059600 + 15928081 = 6860^2 + 3991^2 .

It is a cyclic number.

It is not a de Polignac number, because 62987681 - 2² = 62987677 is a prime.

It is a super-2 number, since 2×62987681² = 7934895915515522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (62987611) 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, 1085966 + ... + 1086023.

It is an arithmetic number, because the mean of its divisors is an integer number (16289925).

Almost surely, 2^62987681 is an apocalyptic number.

It is an amenable number.

62987681 is a deficient number, since it is larger than the sum of its proper divisors (2172019).

62987681 is a wasteful number, since it uses less digits than its factorization.

62987681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2172018.

The product of its digits is 290304, while the sum is 47.

The square root of 62987681 is about 7936.4778711970. The cubic root of 62987681 is about 397.8797836462.

The spelling of 62987681 in words is "sixty-two million, nine hundred eighty-seven thousand, six hundred eighty-one".