64772994 has 48 divisors (see below), whose sum is σ = 153369216. Its totient is φ = 18115680.

The previous prime is 64772993. The next prime is 64773001. The reversal of 64772994 is 49927746.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64772993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6007 + ... + 12869.

It is an arithmetic number, because the mean of its divisors is an integer number (3195192).

Almost surely, 2^64772994 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64772994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76684608).

64772994 is an abundant number, since it is smaller than the sum of its proper divisors (88596222).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64772994 is a wasteful number, since it uses less digits than its factorization.

64772994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6903 (or 6892 counting only the distinct ones).

The product of its digits is 762048, while the sum is 48.

The square root of 64772994 is about 8048.1671205312. The cubic root of 64772994 is about 401.6039638199.

The spelling of 64772994 in words is "sixty-four million, seven hundred seventy-two thousand, nine hundred ninety-four".