61577344 has 16 divisors (see below), whose sum is σ = 122673870. Its totient is φ = 30788608.

The previous prime is 61577339. The next prime is 61577357. The reversal of 61577344 is 44377516.

It can be written as a sum of positive squares in only one way, i.e., 34951744 + 26625600 = 5912^2 + 5160^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is a Smith number, since the sum of its digits (37) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240409 + ... + 240664.

Almost surely, 2^61577344 is an apocalyptic number.

61577344 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61577344 is a deficient number, since it is larger than the sum of its proper divisors (61096526).

61577344 is an equidigital number, since it uses as much as digits as its factorization.

61577344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481087 (or 481075 counting only the distinct ones).

The product of its digits is 70560, while the sum is 37.

The square root of 61577344 is about 7847.1232945583. The cubic root of 61577344 is about 394.8877403574.

The spelling of 61577344 in words is "sixty-one million, five hundred seventy-seven thousand, three hundred forty-four".