64620429 has 8 divisors (see below), whose sum is σ = 86198112. Its totient is φ = 43061520.

The previous prime is 64620427. The next prime is 64620433. The reversal of 64620429 is 92402646.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 64620429 - 2¹ = 64620427 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 64620429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64620421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9319 + ... + 14699.

It is an arithmetic number, because the mean of its divisors is an integer number (10774764).

Almost surely, 2^64620429 is an apocalyptic number.

It is an amenable number.

64620429 is a deficient number, since it is larger than the sum of its proper divisors (21577683).

64620429 is a wasteful number, since it uses less digits than its factorization.

64620429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9387.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 64620429 is about 8038.6832877033. The cubic root of 64620429 is about 401.2884059860.

The spelling of 64620429 in words is "sixty-four million, six hundred twenty thousand, four hundred twenty-nine".