61293663 has 12 divisors (see below), whose sum is σ = 89183328. Its totient is φ = 40563360.

The previous prime is 61293641. The next prime is 61293671. The reversal of 61293663 is 36639216.

61293663 is a `hidden beast` number, since 612 + 9 + 36 + 6 + 3 = 666.

It is not a de Polignac number, because 61293663 - 2¹⁸ = 61031519 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61293613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23623 + ... + 26088.

It is an arithmetic number, because the mean of its divisors is an integer number (7431944).

Almost surely, 2^61293663 is an apocalyptic number.

61293663 is a deficient number, since it is larger than the sum of its proper divisors (27889665).

61293663 is a wasteful number, since it uses less digits than its factorization.

61293663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49854 (or 49851 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 61293663 is about 7829.0269510329. The cubic root of 61293663 is about 394.2804032613.

The spelling of 61293663 in words is "sixty-one million, two hundred ninety-three thousand, six hundred sixty-three".