620045642 has 8 divisors (see below), whose sum is σ = 933355776. Its totient is φ = 308927052.

The previous prime is 620045617. The next prime is 620045711. The reversal of 620045642 is 246540026.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 547178 + ... + 548309.

It is an arithmetic number, because the mean of its divisors is an integer number (116669472).

Almost surely, 2^620045642 is an apocalyptic number.

620045642 is a deficient number, since it is larger than the sum of its proper divisors (313310134).

620045642 is a wasteful number, since it uses less digits than its factorization.

620045642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095772.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 620045642 is about 24900.7156925258. The cubic root of 620045642 is about 852.7228220191.

Adding to 620045642 its reverse (246540026), we get a palindrome (866585668).

The spelling of 620045642 in words is "six hundred twenty million, forty-five thousand, six hundred forty-two".