64404154 has 4 divisors (see below), whose sum is σ = 96606234. Its totient is φ = 32202076.

The previous prime is 64404139. The next prime is 64404173. The reversal of 64404154 is 45140446.

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

It can be written as a sum of positive squares in only one way, i.e., 35081929 + 29322225 = 5923^2 + 5415^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16101037 + ... + 16101040.

Almost surely, 2^64404154 is an apocalyptic number.

64404154 is a deficient number, since it is larger than the sum of its proper divisors (32202080).

64404154 is a wasteful number, since it uses less digits than its factorization.

64404154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32202079.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 64404154 is about 8025.2198723773. The cubic root of 64404154 is about 400.8402213345.

The spelling of 64404154 in words is "sixty-four million, four hundred four thousand, one hundred fifty-four".