61633869 has 8 divisors (see below), whose sum is σ = 89649312. Its totient is φ = 37353840.

The previous prime is 61633843. The next prime is 61633877. The reversal of 61633869 is 96833616.

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

It is not a de Polignac number, because 61633869 - 2⁵ = 61633837 is a prime.

It is a super-2 number, since 2×61633869² = 7597467615818322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61633869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61633889) 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, 933814 + ... + 933879.

It is an arithmetic number, because the mean of its divisors is an integer number (11206164).

Almost surely, 2^61633869 is an apocalyptic number.

It is an amenable number.

61633869 is a deficient number, since it is larger than the sum of its proper divisors (28015443).

61633869 is a wasteful number, since it uses less digits than its factorization.

61633869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867707.

The product of its digits is 139968, while the sum is 42.

The square root of 61633869 is about 7850.7241067305. The cubic root of 61633869 is about 395.0085326363.

The spelling of 61633869 in words is "sixty-one million, six hundred thirty-three thousand, eight hundred sixty-nine".