609504240 has 80 divisors (see below), whose sum is σ = 1925153568. Its totient is φ = 159464448.

The previous prime is 609504239. The next prime is 609504241. The reversal of 609504240 is 42405906.

It is an interprime number because it is at equal distance from previous prime (609504239) and next prime (609504241).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 609504198 and 609504207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609504241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11239 + ... + 36678.

Almost surely, 2^609504240 is an apocalyptic number.

609504240 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

609504240 is an abundant number, since it is smaller than the sum of its proper divisors (1315649328).

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

609504240 is a wasteful number, since it uses less digits than its factorization.

609504240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47986 (or 47980 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 609504240 is about 24688.1396625991. The cubic root of 609504240 is about 847.8627922662.

It can be divided in two parts, 60 and 9504240, that multiplied together give a square (570254400 = 23880²).

The spelling of 609504240 in words is "six hundred nine million, five hundred four thousand, two hundred forty".