61340544 has 64 divisors (see below), whose sum is σ = 181050000. Its totient is φ = 20445696.

The previous prime is 61340527. The next prime is 61340567. The reversal of 61340544 is 44504316.

61340544 is a `hidden beast` number, since 613 + 4 + 0 + 5 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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, 5419 + ... + 12330.

Almost surely, 2^61340544 is an apocalyptic number.

61340544 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

61340544 is an abundant number, since it is smaller than the sum of its proper divisors (119709456).

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

61340544 is a wasteful number, since it uses less digits than its factorization.

61340544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17772 (or 17754 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 61340544 is about 7832.0204289825. The cubic root of 61340544 is about 394.3809005943.

The spelling of 61340544 in words is "sixty-one million, three hundred forty thousand, five hundred forty-four".