64489402 has 8 divisors (see below), whose sum is σ = 96772500. Its totient is φ = 32231904.

The previous prime is 64489391. The next prime is 64489427. The reversal of 64489402 is 20498446.

It can be written as a sum of positive squares in 2 ways, for example, as 63027721 + 1461681 = 7939^2 + 1209^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2224 + ... + 11572.

Almost surely, 2^64489402 is an apocalyptic number.

64489402 is a deficient number, since it is larger than the sum of its proper divisors (32283098).

64489402 is a wasteful number, since it uses less digits than its factorization.

64489402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12800.

The product of its (nonzero) digits is 55296, while the sum is 37.

The square root of 64489402 is about 8030.5293723390. The cubic root of 64489402 is about 401.0169995882.

The spelling of 64489402 in words is "sixty-four million, four hundred eighty-nine thousand, four hundred two".