64672154 has 4 divisors (see below), whose sum is σ = 97008234. Its totient is φ = 32336076.

The previous prime is 64672151. The next prime is 64672183. The reversal of 64672154 is 45127646.

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., 62647225 + 2024929 = 7915^2 + 1423^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64672151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16168037 + ... + 16168040.

Almost surely, 2^64672154 is an apocalyptic number.

64672154 is a deficient number, since it is larger than the sum of its proper divisors (32336080).

64672154 is a wasteful number, since it uses less digits than its factorization.

64672154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32336079.

The product of its digits is 40320, while the sum is 35.

The square root of 64672154 is about 8041.8998998993. The cubic root of 64672154 is about 401.3954469915.

The spelling of 64672154 in words is "sixty-four million, six hundred seventy-two thousand, one hundred fifty-four".