64290819 has 8 divisors (see below), whose sum is σ = 89448192. Its totient is φ = 40997000.

The previous prime is 64290799. The next prime is 64290839. The reversal of 64290819 is 91809246.

It is an interprime number because it is at equal distance from previous prime (64290799) and next prime (64290839).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64290819 - 2⁸ = 64290563 is a prime.

It is a super-2 number, since 2×64290819² = 8266618815381522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64290839) 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, 465807 + ... + 465944.

It is an arithmetic number, because the mean of its divisors is an integer number (11181024).

Almost surely, 2^64290819 is an apocalyptic number.

64290819 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

64290819 is a deficient number, since it is larger than the sum of its proper divisors (25157373).

64290819 is a wasteful number, since it uses less digits than its factorization.

64290819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931777.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 64290819 is about 8018.1555859187. The cubic root of 64290819 is about 400.6049575214.

The spelling of 64290819 in words is "sixty-four million, two hundred ninety thousand, eight hundred nineteen".