620409134 has 4 divisors (see below), whose sum is σ = 930613704. Its totient is φ = 310204566.

The previous prime is 620409113. The next prime is 620409161. The reversal of 620409134 is 431904026.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 620409097 and 620409106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155102282 + ... + 155102285.

It is an arithmetic number, because the mean of its divisors is an integer number (232653426).

Almost surely, 2^620409134 is an apocalyptic number.

620409134 is a deficient number, since it is larger than the sum of its proper divisors (310204570).

620409134 is a wasteful number, since it uses less digits than its factorization.

620409134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 310204569.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 620409134 is about 24908.0134494905. The cubic root of 620409134 is about 852.8894212463.

The spelling of 620409134 in words is "six hundred twenty million, four hundred nine thousand, one hundred thirty-four".