61593487 has 2 divisors, whose sum is σ = 61593488. Its totient is φ = 61593486.

The previous prime is 61593479. The next prime is 61593491. The reversal of 61593487 is 78439516.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61593487 - 2³ = 61593479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61593457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30796743 + 30796744.

It is an arithmetic number, because the mean of its divisors is an integer number (30796744).

Almost surely, 2^61593487 is an apocalyptic number.

61593487 is a deficient number, since it is larger than the sum of its proper divisors (1).

61593487 is an equidigital number, since it uses as much as digits as its factorization.

61593487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 181440, while the sum is 43.

The square root of 61593487 is about 7848.1518206518. The cubic root of 61593487 is about 394.9222450166.

The spelling of 61593487 in words is "sixty-one million, five hundred ninety-three thousand, four hundred eighty-seven".