64619012 has 12 divisors (see below), whose sum is σ = 114140880. Its totient is φ = 32007336.

The previous prime is 64619011. The next prime is 64619053. The reversal of 64619012 is 21091646.

It is a super-2 number, since 2×64619012² = 8351233423712288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64619011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75062 + ... + 75917.

It is an arithmetic number, because the mean of its divisors is an integer number (9511740).

Almost surely, 2^64619012 is an apocalyptic number.

It is an amenable number.

64619012 is a deficient number, since it is larger than the sum of its proper divisors (49521868).

64619012 is a wasteful number, since it uses less digits than its factorization.

64619012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151090 (or 151088 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 64619012 is about 8038.5951508955. The cubic root of 64619012 is about 401.2854728071.

The spelling of 64619012 in words is "sixty-four million, six hundred nineteen thousand, twelve".