620769914 has 8 divisors (see below), whose sum is σ = 931326420. Its totient is φ = 310327776.

The previous prime is 620769883. The next prime is 620769923. The reversal of 620769914 is 419967026.

It can be written as a sum of positive squares in 2 ways, for example, as 460317025 + 160452889 = 21455^2 + 12667^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×620769914² = 770710572255134792, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 13409 + ... + 37700.

Almost surely, 2^620769914 is an apocalyptic number.

620769914 is a deficient number, since it is larger than the sum of its proper divisors (310556506).

620769914 is a wasteful number, since it uses less digits than its factorization.

620769914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57184.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 620769914 is about 24915.2546444944. The cubic root of 620769914 is about 853.0547131492.

The spelling of 620769914 in words is "six hundred twenty million, seven hundred sixty-nine thousand, nine hundred fourteen".