61633956 has 12 divisors (see below), whose sum is σ = 143812592. Its totient is φ = 20544648.

The previous prime is 61633933. The next prime is 61633963. The reversal of 61633956 is 65933616.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-3 number, since 3×61633956³ (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2568070 + ... + 2568093.

Almost surely, 2^61633956 is an apocalyptic number.

It is an amenable number.

61633956 is an abundant number, since it is smaller than the sum of its proper divisors (82178636).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61633956 is a wasteful number, since it uses less digits than its factorization.

61633956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5136170 (or 5136168 counting only the distinct ones).

The product of its digits is 87480, while the sum is 39.

The square root of 61633956 is about 7850.7296476187. The cubic root of 61633956 is about 395.0087184958.

The spelling of 61633956 in words is "sixty-one million, six hundred thirty-three thousand, nine hundred fifty-six".