64778030 has 16 divisors (see below), whose sum is σ = 122737680. Its totient is φ = 24547392.

The previous prime is 64778023. The next prime is 64778033. The reversal of 64778030 is 3087746.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64778033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170279 + ... + 170658.

It is an arithmetic number, because the mean of its divisors is an integer number (7671105).

Almost surely, 2^64778030 is an apocalyptic number.

64778030 is a deficient number, since it is larger than the sum of its proper divisors (57959650).

64778030 is a wasteful number, since it uses less digits than its factorization.

64778030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340963.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 64778030 is about 8048.4799807169. The cubic root of 64778030 is about 401.6143715790.

The spelling of 64778030 in words is "sixty-four million, seven hundred seventy-eight thousand, thirty".