620817542 has 16 divisors (see below), whose sum is σ = 943935120. Its totient is φ = 306189312.

The previous prime is 620817523. The next prime is 620817551. The reversal of 620817542 is 245718026.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74918 + ... + 82790.

It is an arithmetic number, because the mean of its divisors is an integer number (58995945).

Almost surely, 2^620817542 is an apocalyptic number.

620817542 is a deficient number, since it is larger than the sum of its proper divisors (323117578).

620817542 is a wasteful number, since it uses less digits than its factorization.

620817542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8407.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 620817542 is about 24916.2104261463. The cubic root of 620817542 is about 853.0765292037.

The spelling of 620817542 in words is "six hundred twenty million, eight hundred seventeen thousand, five hundred forty-two".