609662478 has 8 divisors (see below), whose sum is σ = 1219324968. Its totient is φ = 203220824.

The previous prime is 609662477. The next prime is 609662491. The reversal of 609662478 is 874266906.

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

609662478 is an admirable number.

It is a super-2 number, since 2×609662478² = 743376674162200968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609662477) 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, 50805201 + ... + 50805212.

It is an arithmetic number, because the mean of its divisors is an integer number (152415621).

Almost surely, 2^609662478 is an apocalyptic number.

609662478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

609662478 is a wasteful number, since it uses less digits than its factorization.

609662478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101610418.

The product of its (nonzero) digits is 870912, while the sum is 48.

The square root of 609662478 is about 24691.3441918418. The cubic root of 609662478 is about 847.9361592722.

The spelling of 609662478 in words is "six hundred nine million, six hundred sixty-two thousand, four hundred seventy-eight".