61864266 has 32 divisors (see below), whose sum is σ = 130651200. Its totient is φ = 19474560.

The previous prime is 61864261. The next prime is 61864277. The reversal of 61864266 is 66246816.

It is not an unprimeable number, because it can be changed into a prime (61864261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 47350 + ... + 48638.

It is an arithmetic number, because the mean of its divisors is an integer number (4082850).

Almost surely, 2^61864266 is an apocalyptic number.

61864266 is an abundant number, since it is smaller than the sum of its proper divisors (68786934).

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

61864266 is a wasteful number, since it uses less digits than its factorization.

61864266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734.

The product of its digits is 82944, while the sum is 39.

The square root of 61864266 is about 7865.3840338537. The cubic root of 61864266 is about 395.5001217340.

The spelling of 61864266 in words is "sixty-one million, eight hundred sixty-four thousand, two hundred sixty-six".