609942651 has 8 divisors (see below), whose sum is σ = 813415440. Its totient is φ = 406549152.

The previous prime is 609942631. The next prime is 609942673. The reversal of 609942651 is 156249906.

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 609942651 - 2⁷ = 609942523 is a prime.

It is not an unprimeable number, because it can be changed into a prime (609942601) 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, 1365 + ... + 34953.

It is an arithmetic number, because the mean of its divisors is an integer number (101676930).

Almost surely, 2^609942651 is an apocalyptic number.

609942651 is a deficient number, since it is larger than the sum of its proper divisors (203472789).

609942651 is a wasteful number, since it uses less digits than its factorization.

609942651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39645.

The product of its (nonzero) digits is 116640, while the sum is 42.

The square root of 609942651 is about 24697.0170465990. The cubic root of 609942651 is about 848.0660302765.

The spelling of 609942651 in words is "six hundred nine million, nine hundred forty-two thousand, six hundred fifty-one".