64977466 has 4 divisors (see below), whose sum is σ = 97466202. Its totient is φ = 32488732.

The previous prime is 64977449. The next prime is 64977469. The reversal of 64977466 is 66477946.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66477946 = 2 ⋅33238973.

It can be written as a sum of positive squares in only one way, i.e., 62015625 + 2961841 = 7875^2 + 1721^2 .

It is not an unprimeable number, because it can be changed into a prime (64977469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16244365 + ... + 16244368.

Almost surely, 2^64977466 is an apocalyptic number.

64977466 is a deficient number, since it is larger than the sum of its proper divisors (32488736).

64977466 is a wasteful number, since it uses less digits than its factorization.

64977466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32488735.

The product of its digits is 1524096, while the sum is 49.

The square root of 64977466 is about 8060.8601278027. The cubic root of 64977466 is about 402.0261073942.

The spelling of 64977466 in words is "sixty-four million, nine hundred seventy-seven thousand, four hundred sixty-six".