61964738 has 32 divisors (see below), whose sum is σ = 108786240. Its totient is φ = 26170560.

The previous prime is 61964731. The next prime is 61964741. The reversal of 61964738 is 83746916.

It is not an unprimeable number, because it can be changed into a prime (61964731) 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 15 ways as a sum of consecutive naturals, for example, 20756 + ... + 23552.

It is an arithmetic number, because the mean of its divisors is an integer number (3399570).

Almost surely, 2^61964738 is an apocalyptic number.

61964738 is a deficient number, since it is larger than the sum of its proper divisors (46821502).

61964738 is a wasteful number, since it uses less digits than its factorization.

61964738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2882.

The product of its digits is 217728, while the sum is 44.

The square root of 61964738 is about 7871.7684163090. The cubic root of 61964738 is about 395.7141127741.

The spelling of 61964738 in words is "sixty-one million, nine hundred sixty-four thousand, seven hundred thirty-eight".