64920135 has 16 divisors (see below), whose sum is σ = 118711296. Its totient is φ = 29677728.

The previous prime is 64920133. The next prime is 64920137. The reversal of 64920135 is 53102946.

It is an interprime number because it is at equal distance from previous prime (64920133) and next prime (64920137).

It is not a de Polignac number, because 64920135 - 2¹ = 64920133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64920133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 309039 + ... + 309248.

It is an arithmetic number, because the mean of its divisors is an integer number (7419456).

Almost surely, 2^64920135 is an apocalyptic number.

64920135 is a deficient number, since it is larger than the sum of its proper divisors (53791161).

64920135 is a wasteful number, since it uses less digits than its factorization.

64920135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618302.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 64920135 is about 8057.3032088907. The cubic root of 64920135 is about 401.9078338744.

The spelling of 64920135 in words is "sixty-four million, nine hundred twenty thousand, one hundred thirty-five".