62642381 has 2 divisors, whose sum is σ = 62642382. Its totient is φ = 62642380.

The previous prime is 62642353. The next prime is 62642389. The reversal of 62642381 is 18324626.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34456900 + 28185481 = 5870^2 + 5309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-62642381 is a prime.

It is a super-2 number, since 2×62642381² = 7848135794698322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62642389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31321190 + 31321191.

It is an arithmetic number, because the mean of its divisors is an integer number (31321191).

Almost surely, 2^62642381 is an apocalyptic number.

It is an amenable number.

62642381 is a deficient number, since it is larger than the sum of its proper divisors (1).

62642381 is an equidigital number, since it uses as much as digits as its factorization.

62642381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13824, while the sum is 32.

The square root of 62642381 is about 7914.6939928212. The cubic root of 62642381 is about 397.1513887754.

The spelling of 62642381 in words is "sixty-two million, six hundred forty-two thousand, three hundred eighty-one".