61801233 has 32 divisors (see below), whose sum is σ = 93623040. Its totient is φ = 35992320.

The previous prime is 61801231. The next prime is 61801247. The reversal of 61801233 is 33210816.

It is not a de Polignac number, because 61801233 - 2¹ = 61801231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61801231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59428 + ... + 60458.

It is an arithmetic number, because the mean of its divisors is an integer number (2925720).

Almost surely, 2^61801233 is an apocalyptic number.

It is an amenable number.

61801233 is a deficient number, since it is larger than the sum of its proper divisors (31821807).

61801233 is a wasteful number, since it uses less digits than its factorization.

61801233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 61801233 is about 7861.3760245901. The cubic root of 61801233 is about 395.3657521298.

The spelling of 61801233 in words is "sixty-one million, eight hundred one thousand, two hundred thirty-three".