64551377 has 4 divisors (see below), whose sum is σ = 70419696. Its totient is φ = 58683060.

The previous prime is 64551353. The next prime is 64551391. The reversal of 64551377 is 77315546.

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 64551377 - 2⁶ = 64551313 is a prime.

It is a super-2 number, since 2×64551377² = 8333760545192258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 64551377.

It is not an unprimeable number, because it can be changed into a prime (64551337) 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, 2934143 + ... + 2934164.

It is an arithmetic number, because the mean of its divisors is an integer number (17604924).

Almost surely, 2^64551377 is an apocalyptic number.

It is an amenable number.

64551377 is a deficient number, since it is larger than the sum of its proper divisors (5868319).

64551377 is a wasteful number, since it uses less digits than its factorization.

64551377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5868318.

The product of its digits is 88200, while the sum is 38.

The square root of 64551377 is about 8034.3871577115. The cubic root of 64551377 is about 401.1454189909.

The spelling of 64551377 in words is "sixty-four million, five hundred fifty-one thousand, three hundred seventy-seven".