1065620051 has 12 divisors (see below), whose sum is σ = 1115131200. Its totient is φ = 1017094848.

The previous prime is 1065620047. The next prime is 1065620057. The reversal of 1065620051 is 1500265601.

It is not a de Polignac number, because 1065620051 - 2² = 1065620047 is a prime.

It is a super-2 number, since 2×1065620051² = 2271092186186485202, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1065620051.

It is not an unprimeable number, because it can be changed into a prime (1065620057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 227390 + ... + 232028.

It is an arithmetic number, because the mean of its divisors is an integer number (92927600).

Almost surely, 2^1065620051 is an apocalyptic number.

1065620051 is a deficient number, since it is larger than the sum of its proper divisors (49511149).

1065620051 is an frugal number, since it uses more digits than its factorization.

1065620051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846 (or 4757 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1065620051 is about 32643.8363401117. The cubic root of 1065620051 is about 1021.4116207252.

Adding to 1065620051 its reverse (1500265601), we get a palindrome (2565885652).

The spelling of 1065620051 in words is "one billion, sixty-five million, six hundred twenty thousand, fifty-one".