61435663 has 2 divisors, whose sum is σ = 61435664. Its totient is φ = 61435662.

The previous prime is 61435657. The next prime is 61435669. The reversal of 61435663 is 36653416.

It is a balanced prime because it is at equal distance from previous prime (61435657) and next prime (61435669).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61435663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61435669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30717831 + 30717832.

It is an arithmetic number, because the mean of its divisors is an integer number (30717832).

Almost surely, 2^61435663 is an apocalyptic number.

61435663 is a deficient number, since it is larger than the sum of its proper divisors (1).

61435663 is an equidigital number, since it uses as much as digits as its factorization.

61435663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 38880, while the sum is 34.

The square root of 61435663 is about 7838.0905200183. The cubic root of 61435663 is about 394.5846469854.

The spelling of 61435663 in words is "sixty-one million, four hundred thirty-five thousand, six hundred sixty-three".