620280740 has 24 divisors (see below), whose sum is σ = 1305887352. Its totient is φ = 247484160.

The previous prime is 620280737. The next prime is 620280743. The reversal of 620280740 is 47082026.

It is an interprime number because it is at equal distance from previous prime (620280737) and next prime (620280743).

It can be written as a sum of positive squares in 4 ways, for example, as 110334016 + 509946724 = 10504^2 + 22582^2 .

It is not an unprimeable number, because it can be changed into a prime (620280743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31121 + ... + 47000.

It is an arithmetic number, because the mean of its divisors is an integer number (54411973).

Almost surely, 2^620280740 is an apocalyptic number.

It is an amenable number.

620280740 is an abundant number, since it is smaller than the sum of its proper divisors (685606612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

620280740 is a wasteful number, since it uses less digits than its factorization.

620280740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78527 (or 78525 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 620280740 is about 24905.4359528196. The cubic root of 620280740 is about 852.8305818808.

The spelling of 620280740 in words is "six hundred twenty million, two hundred eighty thousand, seven hundred forty".