64090797 has 4 divisors (see below), whose sum is σ = 85454400. Its totient is φ = 42727196.

The previous prime is 64090739. The next prime is 64090843. The reversal of 64090797 is 79709046.

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 a cyclic number.

It is not a de Polignac number, because 64090797 - 2⁷ = 64090669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64090717) 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, 10681797 + ... + 10681802.

It is an arithmetic number, because the mean of its divisors is an integer number (21363600).

Almost surely, 2^64090797 is an apocalyptic number.

It is an amenable number.

64090797 is a deficient number, since it is larger than the sum of its proper divisors (21363603).

64090797 is a wasteful number, since it uses less digits than its factorization.

64090797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21363602.

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 64090797 is about 8005.6728012079. The cubic root of 64090797 is about 400.1890710329.

The spelling of 64090797 in words is "sixty-four million, ninety thousand, seven hundred ninety-seven".