61894933 has 4 divisors (see below), whose sum is σ = 61936000. Its totient is φ = 61853868.

The previous prime is 61894927. The next prime is 61894939. The reversal of 61894933 is 33949816.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (61894927) and next prime (61894939).

It is a cyclic number.

It is not a de Polignac number, because 61894933 - 2⁵ = 61894901 is a prime.

It is a super-4 number, since 4×61894933⁴ (a number of 32 digits) contains 4444 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61894933.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61894939) 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, 18183 + ... + 21316.

It is an arithmetic number, because the mean of its divisors is an integer number (15484000).

Almost surely, 2^61894933 is an apocalyptic number.

It is an amenable number.

61894933 is a deficient number, since it is larger than the sum of its proper divisors (41067).

61894933 is a wasteful number, since it uses less digits than its factorization.

61894933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41066.

The product of its digits is 139968, while the sum is 43.

The square root of 61894933 is about 7867.3332839025. Note that the first 3 decimals coincide. The cubic root of 61894933 is about 395.5654626242.

The spelling of 61894933 in words is "sixty-one million, eight hundred ninety-four thousand, nine hundred thirty-three".