64897038 has 64 divisors (see below), whose sum is σ = 150315840. Its totient is φ = 20995200.

The previous prime is 64897013. The next prime is 64897039. The reversal of 64897038 is 83079846.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64896984 and 64897002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64897039) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161638 + ... + 162038.

It is an arithmetic number, because the mean of its divisors is an integer number (2348685).

Almost surely, 2^64897038 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64897038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75157920).

64897038 is an abundant number, since it is smaller than the sum of its proper divisors (85418802).

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

64897038 is an equidigital number, since it uses as much as digits as its factorization.

64897038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 64897038 is about 8055.8697854422. The cubic root of 64897038 is about 401.8601652205.

The spelling of 64897038 in words is "sixty-four million, eight hundred ninety-seven thousand, thirty-eight".