64743501 has 4 divisors (see below), whose sum is σ = 86324672. Its totient is φ = 43162332.

The previous prime is 64743491. The next prime is 64743517. The reversal of 64743501 is 10534746.

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 64743501 - 2⁹ = 64742989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64743521) 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, 10790581 + ... + 10790586.

It is an arithmetic number, because the mean of its divisors is an integer number (21581168).

Almost surely, 2^64743501 is an apocalyptic number.

It is an amenable number.

64743501 is a deficient number, since it is larger than the sum of its proper divisors (21581171).

64743501 is a wasteful number, since it uses less digits than its factorization.

64743501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21581170.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 64743501 is about 8046.3346313710. The cubic root of 64743501 is about 401.5430006358.

The spelling of 64743501 in words is "sixty-four million, seven hundred forty-three thousand, five hundred one".