64212629 has 4 divisors (see below), whose sum is σ = 69152076. Its totient is φ = 59273184.

The previous prime is 64212623. The next prime is 64212661. The reversal of 64212629 is 92621246.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92621246 = 2 ⋅46310623.

It can be written as a sum of positive squares in 2 ways, for example, as 12040900 + 52171729 = 3470^2 + 7223^2 .

It is a cyclic number.

It is not a de Polignac number, because 64212629 - 2¹⁶ = 64147093 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64212595 and 64212604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64212623) 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, 2469704 + ... + 2469729.

It is an arithmetic number, because the mean of its divisors is an integer number (17288019).

Almost surely, 2^64212629 is an apocalyptic number.

It is an amenable number.

64212629 is a deficient number, since it is larger than the sum of its proper divisors (4939447).

64212629 is a wasteful number, since it uses less digits than its factorization.

64212629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4939446.

The product of its digits is 10368, while the sum is 32.

The square root of 64212629 is about 8013.2782929335. The cubic root of 64212629 is about 400.4424874151.

The spelling of 64212629 in words is "sixty-four million, two hundred twelve thousand, six hundred twenty-nine".