64942470 has 96 divisors (see below), whose sum is σ = 175567392. Its totient is φ = 16644096.

The previous prime is 64942463. The next prime is 64942477. The reversal of 64942470 is 7424946.

64942470 is a `hidden beast` number, since 649 + 4 + 2 + 4 + 7 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64942463) and next prime (64942477).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64942477) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 375304 + ... + 375476.

It is an arithmetic number, because the mean of its divisors is an integer number (1828827).

Almost surely, 2^64942470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64942470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87783696).

64942470 is an abundant number, since it is smaller than the sum of its proper divisors (110624922).

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

64942470 is a wasteful number, since it uses less digits than its factorization.

64942470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 64942470 is about 8058.6890993511. The cubic root of 64942470 is about 401.9539191258.

The spelling of 64942470 in words is "sixty-four million, nine hundred forty-two thousand, four hundred seventy".