64951693 has 2 divisors, whose sum is σ = 64951694. Its totient is φ = 64951692.

The previous prime is 64951681. The next prime is 64951717. The reversal of 64951693 is 39615946.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40220964 + 24730729 = 6342^2 + 4973^2 .

It is a cyclic number.

It is not a de Polignac number, because 64951693 - 2¹⁷ = 64820621 is a prime.

It is equal to p_3837859 and since 64951693 and 3837859 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64951643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32475846 + 32475847.

It is an arithmetic number, because the mean of its divisors is an integer number (32475847).

Almost surely, 2^64951693 is an apocalyptic number.

It is an amenable number.

64951693 is a deficient number, since it is larger than the sum of its proper divisors (1).

64951693 is an equidigital number, since it uses as much as digits as its factorization.

64951693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 43.

The square root of 64951693 is about 8059.2613185080. The cubic root of 64951693 is about 401.9729464563.

The spelling of 64951693 in words is "sixty-four million, nine hundred fifty-one thousand, six hundred ninety-three".