61964385 has 16 divisors (see below), whose sum is σ = 113306496. Its totient is φ = 28326528.

The previous prime is 61964321. The next prime is 61964389. The reversal of 61964385 is 58346916.

It is not a de Polignac number, because 61964385 - 2⁶ = 61964321 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (61964389) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 294964 + ... + 295173.

It is an arithmetic number, because the mean of its divisors is an integer number (7081656).

Almost surely, 2^61964385 is an apocalyptic number.

It is an amenable number.

61964385 is a deficient number, since it is larger than the sum of its proper divisors (51342111).

61964385 is a wasteful number, since it uses less digits than its factorization.

61964385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590152.

The product of its digits is 155520, while the sum is 42.

The square root of 61964385 is about 7871.7459943776. The cubic root of 61964385 is about 395.7133613395.

The spelling of 61964385 in words is "sixty-one million, nine hundred sixty-four thousand, three hundred eighty-five".