61943481 has 32 divisors (see below), whose sum is σ = 94026240. Its totient is φ = 40294800.

The previous prime is 61943467. The next prime is 61943489. The reversal of 61943481 is 18434916.

61943481 is a `hidden beast` number, since 619 + 4 + 34 + 8 + 1 = 666.

It is not a de Polignac number, because 61943481 - 2¹⁰ = 61942457 is a prime.

It is a super-2 number, since 2×61943481² = 7673989676794722, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (61943489) 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, 293466 + ... + 293676.

It is an arithmetic number, because the mean of its divisors is an integer number (2938320).

Almost surely, 2^61943481 is an apocalyptic number.

It is an amenable number.

61943481 is a deficient number, since it is larger than the sum of its proper divisors (32082759).

61943481 is a wasteful number, since it uses less digits than its factorization.

61943481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 434 (or 428 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 61943481 is about 7870.4180956287. The cubic root of 61943481 is about 395.6688576971.

It can be divided in two parts, 619 and 43481, that added together give a square (44100 = 210²).

The spelling of 61943481 in words is "sixty-one million, nine hundred forty-three thousand, four hundred eighty-one".