64340998 has 4 divisors (see below), whose sum is σ = 96511500. Its totient is φ = 32170498.

The previous prime is 64340987. The next prime is 64340999. The reversal of 64340998 is 89904346.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64340999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16085248 + ... + 16085251.

It is an arithmetic number, because the mean of its divisors is an integer number (24127875).

Almost surely, 2^64340998 is an apocalyptic number.

64340998 is a deficient number, since it is larger than the sum of its proper divisors (32170502).

64340998 is a wasteful number, since it uses less digits than its factorization.

64340998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32170501.

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 64340998 is about 8021.2840617946. The cubic root of 64340998 is about 400.7091545067.

The spelling of 64340998 in words is "sixty-four million, three hundred forty thousand, nine hundred ninety-eight".