61490663 has 8 divisors (see below), whose sum is σ = 66282048. Its totient is φ = 56708064.

The previous prime is 61490651. The next prime is 61490699. The reversal of 61490663 is 36609416.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61490663 - 2⁶ = 61490599 is a prime.

It is a super-2 number, since 2×61490663² = 7562203272359138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61490603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23906 + ... + 26352.

It is an arithmetic number, because the mean of its divisors is an integer number (8285256).

Almost surely, 2^61490663 is an apocalyptic number.

61490663 is a deficient number, since it is larger than the sum of its proper divisors (4791385).

61490663 is a wasteful number, since it uses less digits than its factorization.

61490663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 61490663 is about 7841.5982427054. The cubic root of 61490663 is about 394.7023619058.

The spelling of 61490663 in words is "sixty-one million, four hundred ninety thousand, six hundred sixty-three".