64975949 has 8 divisors (see below), whose sum is σ = 66849408. Its totient is φ = 63123040.

The previous prime is 64975931. The next prime is 64975961. The reversal of 64975949 is 94957946.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64975949 - 2¹⁶ = 64910413 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 64975949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64975049) 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, 1394 + ... + 11484.

It is an arithmetic number, because the mean of its divisors is an integer number (8356176).

Almost surely, 2^64975949 is an apocalyptic number.

It is an amenable number.

64975949 is a deficient number, since it is larger than the sum of its proper divisors (1873459).

64975949 is a wasteful number, since it uses less digits than its factorization.

64975949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275.

The product of its digits is 2449440, while the sum is 53.

The square root of 64975949 is about 8060.7660305954. The cubic root of 64975949 is about 402.0229787282.

The spelling of 64975949 in words is "sixty-four million, nine hundred seventy-five thousand, nine hundred forty-nine".