64354390 has 16 divisors (see below), whose sum is σ = 117738000. Its totient is φ = 25319520.

The previous prime is 64354373. The next prime is 64354399. The reversal of 64354390 is 9345346.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64354399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52140 + ... + 53359.

It is an arithmetic number, because the mean of its divisors is an integer number (7358625).

Almost surely, 2^64354390 is an apocalyptic number.

64354390 is a deficient number, since it is larger than the sum of its proper divisors (53383610).

64354390 is a wasteful number, since it uses less digits than its factorization.

64354390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105567.

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 64354390 is about 8022.1187974250. The cubic root of 64354390 is about 400.7369539135.

The spelling of 64354390 in words is "sixty-four million, three hundred fifty-four thousand, three hundred ninety".