610821057 has 16 divisors (see below), whose sum is σ = 1015391232. Its totient is φ = 317309520.

The previous prime is 610821053. The next prime is 610821059. The reversal of 610821057 is 750128016.

It is not a de Polignac number, because 610821057 - 2² = 610821053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (610821053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1321893 + ... + 1322354.

It is an arithmetic number, because the mean of its divisors is an integer number (63461952).

Almost surely, 2^610821057 is an apocalyptic number.

It is an amenable number.

610821057 is a deficient number, since it is larger than the sum of its proper divisors (404570175).

610821057 is a wasteful number, since it uses less digits than its factorization.

610821057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2644268.

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 610821057 is about 24714.7942941065. The cubic root of 610821057 is about 848.4729477486.

The spelling of 610821057 in words is "six hundred ten million, eight hundred twenty-one thousand, fifty-seven".