64998029970 has 24 divisors (see below), whose sum is σ = 168994878156. Its totient is φ = 17332807968.

The previous prime is 64998029947. The next prime is 64998029977. The reversal of 64998029970 is 7992089946.

64998029970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61284468249 + 3713561721 = 247557^2 + 60939^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64998029898 and 64998029907.

It is not an unprimeable number, because it can be changed into a prime (64998029977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361100077 + ... + 361100256.

Almost surely, 2^64998029970 is an apocalyptic number.

64998029970 is an abundant number, since it is smaller than the sum of its proper divisors (103996848186).

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

64998029970 is a wasteful number, since it uses less digits than its factorization.

64998029970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722200346 (or 722200343 counting only the distinct ones).

The product of its (nonzero) digits is 17635968, while the sum is 63.

The spelling of 64998029970 in words is "sixty-four billion, nine hundred ninety-eight million, twenty-nine thousand, nine hundred seventy".