61879963 has 4 divisors (see below), whose sum is σ = 62023968. Its totient is φ = 61735960.

The previous prime is 61879957. The next prime is 61879969. The reversal of 61879963 is 36997816.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61879957) and next prime (61879969).

It is a cyclic number.

It is not a de Polignac number, because 61879963 - 2¹⁷ = 61748891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61879969) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71356 + ... + 72217.

It is an arithmetic number, because the mean of its divisors is an integer number (15505992).

Almost surely, 2^61879963 is an apocalyptic number.

61879963 is a deficient number, since it is larger than the sum of its proper divisors (144005).

61879963 is a wasteful number, since it uses less digits than its factorization.

61879963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144004.

The product of its digits is 489888, while the sum is 49.

The square root of 61879963 is about 7866.3818239391. The cubic root of 61879963 is about 395.5335693703.

The spelling of 61879963 in words is "sixty-one million, eight hundred seventy-nine thousand, nine hundred sixty-three".