64773797 has 16 divisors (see below), whose sum is σ = 72192384. Its totient is φ = 57624000.

The previous prime is 64773743. The next prime is 64773817. The reversal of 64773797 is 79737746.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64773797 - 2¹⁶ = 64708261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64773197) 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, 153647 + ... + 154067.

It is an arithmetic number, because the mean of its divisors is an integer number (4512024).

Almost surely, 2^64773797 is an apocalyptic number.

It is an amenable number.

64773797 is a deficient number, since it is larger than the sum of its proper divisors (7418587).

64773797 is a wasteful number, since it uses less digits than its factorization.

64773797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its digits is 1555848, while the sum is 50.

The square root of 64773797 is about 8048.2170075117. The cubic root of 64773797 is about 401.6056233935.

The spelling of 64773797 in words is "sixty-four million, seven hundred seventy-three thousand, seven hundred ninety-seven".