61624642 has 8 divisors (see below), whose sum is σ = 92682000. Its totient is φ = 30730644.

The previous prime is 61624631. The next prime is 61624649. The reversal of 61624642 is 24642616.

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

It is not an unprimeable number, because it can be changed into a prime (61624649) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 39892 + ... + 41407.

It is an arithmetic number, because the mean of its divisors is an integer number (11585250).

Almost surely, 2^61624642 is an apocalyptic number.

61624642 is a deficient number, since it is larger than the sum of its proper divisors (31057358).

61624642 is a wasteful number, since it uses less digits than its factorization.

61624642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81680.

The product of its digits is 13824, while the sum is 31.

The square root of 61624642 is about 7850.1364319354. The cubic root of 61624642 is about 394.9888198513.

The spelling of 61624642 in words is "sixty-one million, six hundred twenty-four thousand, six hundred forty-two".