64451013 has 16 divisors (see below), whose sum is σ = 94527552. Its totient is φ = 39058800.

The previous prime is 64450979. The next prime is 64451017. The reversal of 64451013 is 31015446.

It is not a de Polignac number, because 64451013 - 2⁶ = 64450949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64451017) 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, 4078 + ... + 12063.

It is an arithmetic number, because the mean of its divisors is an integer number (5907972).

Almost surely, 2^64451013 is an apocalyptic number.

It is an amenable number.

64451013 is a deficient number, since it is larger than the sum of its proper divisors (30076539).

64451013 is a wasteful number, since it uses less digits than its factorization.

64451013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16177 (or 16155 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 64451013 is about 8028.1388254065. The cubic root of 64451013 is about 400.9374118481.

Adding to 64451013 its reverse (31015446), we get a palindrome (95466459).

The spelling of 64451013 in words is "sixty-four million, four hundred fifty-one thousand, thirteen".