64210427 has 4 divisors (see below), whose sum is σ = 64604520. Its totient is φ = 63816336.

The previous prime is 64210423. The next prime is 64210441. The reversal of 64210427 is 72401246.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64210427 - 2² = 64210423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64210396 and 64210405.

It is not an unprimeable number, because it can be changed into a prime (64210423) 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, 196802 + ... + 197127.

It is an arithmetic number, because the mean of its divisors is an integer number (16151130).

Almost surely, 2^64210427 is an apocalyptic number.

64210427 is a deficient number, since it is larger than the sum of its proper divisors (394093).

64210427 is a wasteful number, since it uses less digits than its factorization.

64210427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394092.

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 64210427 is about 8013.1408948052. The cubic root of 64210427 is about 400.4379099955.

The spelling of 64210427 in words is "sixty-four million, two hundred ten thousand, four hundred twenty-seven".