64461073 has 2 divisors, whose sum is σ = 64461074. Its totient is φ = 64461072.

The previous prime is 64461031. The next prime is 64461083. The reversal of 64461073 is 37016446.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57866449 + 6594624 = 7607^2 + 2568^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64461073 is a prime.

It is a super-2 number, since 2×64461073² = 8310459864622658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (64461013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32230536 + 32230537.

It is an arithmetic number, because the mean of its divisors is an integer number (32230537).

Almost surely, 2^64461073 is an apocalyptic number.

It is an amenable number.

64461073 is a deficient number, since it is larger than the sum of its proper divisors (1).

64461073 is an equidigital number, since it uses as much as digits as its factorization.

64461073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 64461073 is about 8028.7653471751. The cubic root of 64461073 is about 400.9582712075.

The spelling of 64461073 in words is "sixty-four million, four hundred sixty-one thousand, seventy-three".