64252061 has 4 divisors (see below), whose sum is σ = 68031612. Its totient is φ = 60472512.

The previous prime is 64252033. The next prime is 64252079. The reversal of 64252061 is 16025246.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52562500 + 11689561 = 7250^2 + 3419^2 .

It is a cyclic number.

It is not a de Polignac number, because 64252061 - 2¹⁸ = 63989917 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64252061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64252021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1889750 + ... + 1889783.

It is an arithmetic number, because the mean of its divisors is an integer number (17007903).

Almost surely, 2^64252061 is an apocalyptic number.

It is an amenable number.

64252061 is a deficient number, since it is larger than the sum of its proper divisors (3779551).

64252061 is a wasteful number, since it uses less digits than its factorization.

64252061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3779550.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 64252061 is about 8015.7383315575. The cubic root of 64252061 is about 400.5244391917.

The spelling of 64252061 in words is "sixty-four million, two hundred fifty-two thousand, sixty-one".