620036645 has 32 divisors (see below), whose sum is σ = 803416320. Its totient is φ = 458191360.

The previous prime is 620036609. The next prime is 620036663. The reversal of 620036645 is 546630026.

It is not a de Polignac number, because 620036645 - 2¹² = 620032549 is a prime.

It is a super-2 number, since 2×620036645² = 768890882285712050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 503891 + ... + 505119.

It is an arithmetic number, because the mean of its divisors is an integer number (25106760).

Almost surely, 2^620036645 is an apocalyptic number.

It is an amenable number.

620036645 is a deficient number, since it is larger than the sum of its proper divisors (183379675).

620036645 is a wasteful number, since it uses less digits than its factorization.

620036645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 620036645 is about 24900.5350344124. The cubic root of 620036645 is about 852.7186975999.

The spelling of 620036645 in words is "six hundred twenty million, thirty-six thousand, six hundred forty-five".