61939463 has 2 divisors, whose sum is σ = 61939464. Its totient is φ = 61939462.

The previous prime is 61939459. The next prime is 61939469. The reversal of 61939463 is 36493916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61939463 - 2² = 61939459 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61939463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61939469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30969731 + 30969732.

It is an arithmetic number, because the mean of its divisors is an integer number (30969732).

Almost surely, 2^61939463 is an apocalyptic number.

61939463 is a deficient number, since it is larger than the sum of its proper divisors (1).

61939463 is an equidigital number, since it uses as much as digits as its factorization.

61939463 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 41.

The square root of 61939463 is about 7870.1628318606. The cubic root of 61939463 is about 395.6603024151.

The spelling of 61939463 in words is "sixty-one million, nine hundred thirty-nine thousand, four hundred sixty-three".