620915734 has 4 divisors (see below), whose sum is σ = 931373604. Its totient is φ = 310457866.

The previous prime is 620915719. The next prime is 620915761. The reversal of 620915734 is 437519026.

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

It is a junction number, because it is equal to n+sod(n) for n = 620915693 and 620915702.

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 as a sum of consecutive naturals, namely, 155228932 + ... + 155228935.

It is an arithmetic number, because the mean of its divisors is an integer number (232843401).

Almost surely, 2^620915734 is an apocalyptic number.

620915734 is a deficient number, since it is larger than the sum of its proper divisors (310457870).

620915734 is a wasteful number, since it uses less digits than its factorization.

620915734 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310457869.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 620915734 is about 24918.1807923452. The cubic root of 620915734 is about 853.1215026294.

The spelling of 620915734 in words is "six hundred twenty million, nine hundred fifteen thousand, seven hundred thirty-four".