61905424 has 45 divisors (see below), whose sum is σ = 140022381. Its totient is φ = 26436480.

The previous prime is 61905409. The next prime is 61905433. The reversal of 61905424 is 42450916.

The square root of 61905424 is 7868.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 41835024 + 20070400 = 6468^2 + 4480^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 220164 + ... + 220444.

Almost surely, 2^61905424 is an apocalyptic number.

61905424 is the 7868-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61905424

61905424 is an abundant number, since it is smaller than the sum of its proper divisors (78116957).

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

61905424 is an equidigital number, since it uses as much as digits as its factorization.

61905424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 290 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The cubic root of 61905424 is about 395.5878104031.

The spelling of 61905424 in words is "sixty-one million, nine hundred five thousand, four hundred twenty-four".