61340364 has 18 divisors (see below), whose sum is σ = 155054900. Its totient is φ = 20446776.

The previous prime is 61340359. The next prime is 61340393. The reversal of 61340364 is 46304316.

61340364 is a `hidden beast` number, since 613 + 40 + 3 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 851914 + ... + 851985.

Almost surely, 2^61340364 is an apocalyptic number.

It is an amenable number.

61340364 is an abundant number, since it is smaller than the sum of its proper divisors (93714536).

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

61340364 is a wasteful number, since it uses less digits than its factorization.

61340364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1703909 (or 1703904 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 61340364 is about 7832.0089376864. The cubic root of 61340364 is about 394.3805148318.

The spelling of 61340364 in words is "sixty-one million, three hundred forty thousand, three hundred sixty-four".