64409097 has 4 divisors (see below), whose sum is σ = 85878800. Its totient is φ = 42939396.

The previous prime is 64409089. The next prime is 64409101. The reversal of 64409097 is 79090446.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64409097 - 2³ = 64409089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64409017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10734847 + ... + 10734852.

It is an arithmetic number, because the mean of its divisors is an integer number (21469700).

Almost surely, 2^64409097 is an apocalyptic number.

It is an amenable number.

64409097 is a deficient number, since it is larger than the sum of its proper divisors (21469703).

64409097 is a wasteful number, since it uses less digits than its factorization.

64409097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21469702.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 64409097 is about 8025.5278331085. The cubic root of 64409097 is about 400.8504758621.

The spelling of 64409097 in words is "sixty-four million, four hundred nine thousand, ninety-seven".