64820030 has 16 divisors (see below), whose sum is σ = 127283184. Its totient is φ = 23570880.

The previous prime is 64820029. The next prime is 64820033. The reversal of 64820030 is 3002846.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64819978 and 64820005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64820033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 294527 + ... + 294746.

It is an arithmetic number, because the mean of its divisors is an integer number (7955199).

Almost surely, 2^64820030 is an apocalyptic number.

64820030 is a deficient number, since it is larger than the sum of its proper divisors (62463154).

64820030 is a wasteful number, since it uses less digits than its factorization.

64820030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589291.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 64820030 is about 8051.0887462504. The cubic root of 64820030 is about 401.7011507921.

Adding to 64820030 its reverse (3002846), we get a palindrome (67822876).

The spelling of 64820030 in words is "sixty-four million, eight hundred twenty thousand, thirty".