61726387 has 2 divisors, whose sum is σ = 61726388. Its totient is φ = 61726386.

The previous prime is 61726333. The next prime is 61726393. The reversal of 61726387 is 78362716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61726387 - 2¹¹ = 61724339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61726787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30863193 + 30863194.

It is an arithmetic number, because the mean of its divisors is an integer number (30863194).

Almost surely, 2^61726387 is an apocalyptic number.

61726387 is a deficient number, since it is larger than the sum of its proper divisors (1).

61726387 is an equidigital number, since it uses as much as digits as its factorization.

61726387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 40.

The square root of 61726387 is about 7856.6142198787. The cubic root of 61726387 is about 395.2060816423.

The spelling of 61726387 in words is "sixty-one million, seven hundred twenty-six thousand, three hundred eighty-seven".