64061290 has 16 divisors (see below), whose sum is σ = 119287080. Its totient is φ = 24740800.

The previous prime is 64061281. The next prime is 64061299. The reversal of 64061290 is 9216046.

It is an interprime number because it is at equal distance from previous prime (64061281) and next prime (64061299).

It can be written as a sum of positive squares in 4 ways, for example, as 63824121 + 237169 = 7989^2 + 487^2 .

It is not an unprimeable number, because it can be changed into a prime (64061299) 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 7 ways as a sum of consecutive naturals, for example, 110161 + ... + 110740.

Almost surely, 2^64061290 is an apocalyptic number.

64061290 is a deficient number, since it is larger than the sum of its proper divisors (55225790).

64061290 is a wasteful number, since it uses less digits than its factorization.

64061290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220937.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 64061290 is about 8003.8297083334. The cubic root of 64061290 is about 400.1276467614.

The spelling of 64061290 in words is "sixty-four million, sixty-one thousand, two hundred ninety".