620552776 has 8 divisors (see below), whose sum is σ = 1163536470. Its totient is φ = 310276384.

The previous prime is 620552743. The next prime is 620552783. The reversal of 620552776 is 677255026.

It can be written as a sum of positive squares in only one way, i.e., 498450276 + 122102500 = 22326^2 + 11050^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38784541 + ... + 38784556.

Almost surely, 2^620552776 is an apocalyptic number.

It is an amenable number.

620552776 is a deficient number, since it is larger than the sum of its proper divisors (542983694).

620552776 is a wasteful number, since it uses less digits than its factorization.

620552776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77569103 (or 77569099 counting only the distinct ones).

The product of its (nonzero) digits is 176400, while the sum is 40.

The square root of 620552776 is about 24910.8967321532. The cubic root of 620552776 is about 852.9552387216.

The spelling of 620552776 in words is "six hundred twenty million, five hundred fifty-two thousand, seven hundred seventy-six".