61740544 has 20 divisors (see below), whose sum is σ = 123361524. Its totient is φ = 30870016.

The previous prime is 61740541. The next prime is 61740551. The reversal of 61740544 is 44504716.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61740541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59782 + ... + 60805.

Almost surely, 2^61740544 is an apocalyptic number.

61740544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61740544 is a deficient number, since it is larger than the sum of its proper divisors (61620980).

61740544 is an equidigital number, since it uses as much as digits as its factorization.

61740544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120605 (or 120589 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 61740544 is about 7857.5151288432. The cubic root of 61740544 is about 395.2362929511.

The spelling of 61740544 in words is "sixty-one million, seven hundred forty thousand, five hundred forty-four".