61537642 has 8 divisors (see below), whose sum is σ = 92435616. Its totient is φ = 30725772.

The previous prime is 61537639. The next prime is 61537661. The reversal of 61537642 is 24673516.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 61537598 and 61537607.

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 3 ways as a sum of consecutive naturals, for example, 19708 + ... + 22615.

It is an arithmetic number, because the mean of its divisors is an integer number (11554452).

Almost surely, 2^61537642 is an apocalyptic number.

61537642 is a deficient number, since it is larger than the sum of its proper divisors (30897974).

61537642 is a wasteful number, since it uses less digits than its factorization.

61537642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43052.

The product of its digits is 30240, while the sum is 34.

The square root of 61537642 is about 7844.5931698209. The cubic root of 61537642 is about 394.8028541385.

The spelling of 61537642 in words is "sixty-one million, five hundred thirty-seven thousand, six hundred forty-two".