61163944 has 32 divisors (see below), whose sum is σ = 117028800. Its totient is φ = 29962240.

The previous prime is 61163911. The next prime is 61163981. The reversal of 61163944 is 44936116.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145767 + ... + 146185.

It is an arithmetic number, because the mean of its divisors is an integer number (3657150).

Almost surely, 2^61163944 is an apocalyptic number.

It is an amenable number.

61163944 is a deficient number, since it is larger than the sum of its proper divisors (55864856).

61163944 is a wasteful number, since it uses less digits than its factorization.

61163944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753 (or 749 counting only the distinct ones).

The product of its digits is 15552, while the sum is 34.

The square root of 61163944 is about 7820.7380725862. The cubic root of 61163944 is about 394.0020613667.

It can be divided in two parts, 611639 and 44, that multiplied together give a triangular number (26912116 = T₇₃₃₆).

The spelling of 61163944 in words is "sixty-one million, one hundred sixty-three thousand, nine hundred forty-four".