620403662 has 4 divisors (see below), whose sum is σ = 930605496. Its totient is φ = 310201830.

The previous prime is 620403601. The next prime is 620403673. The reversal of 620403662 is 266304026.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155100914 + ... + 155100917.

It is an arithmetic number, because the mean of its divisors is an integer number (232651374).

Almost surely, 2^620403662 is an apocalyptic number.

620403662 is a deficient number, since it is larger than the sum of its proper divisors (310201834).

620403662 is a wasteful number, since it uses less digits than its factorization.

620403662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310201833.

The product of its (nonzero) digits is 10368, while the sum is 29.

The square root of 620403662 is about 24907.9036050809. The cubic root of 620403662 is about 852.8869137479.

Adding to 620403662 its reverse (266304026), we get a palindrome (886707688).

The spelling of 620403662 in words is "six hundred twenty million, four hundred three thousand, six hundred sixty-two".