64155534 has 16 divisors (see below), whose sum is σ = 128767872. Its totient is φ = 21309048.

The previous prime is 64155491. The next prime is 64155551. The reversal of 64155534 is 43555146.

It is a junction number, because it is equal to n+sod(n) for n = 64155495 and 64155504.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17194 + ... + 20589.

It is an arithmetic number, because the mean of its divisors is an integer number (8047992).

Almost surely, 2^64155534 is an apocalyptic number.

64155534 is an abundant number, since it is smaller than the sum of its proper divisors (64612338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64155534 is a wasteful number, since it uses less digits than its factorization.

64155534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38071.

The product of its digits is 36000, while the sum is 33.

The square root of 64155534 is about 8009.7149762023. The cubic root of 64155534 is about 400.3237670332.

The spelling of 64155534 in words is "sixty-four million, one hundred fifty-five thousand, five hundred thirty-four".