162640651 has 4 divisors (see below), whose sum is σ = 163273752. Its totient is φ = 162007552.

The previous prime is 162640619. The next prime is 162640661. The reversal of 162640651 is 156046261.

162640651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 162640651 - 2⁵ = 162640619 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162640661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 316165 + ... + 316678.

It is an arithmetic number, because the mean of its divisors is an integer number (40818438).

Almost surely, 2^162640651 is an apocalyptic number.

162640651 is a deficient number, since it is larger than the sum of its proper divisors (633101).

162640651 is an equidigital number, since it uses as much as digits as its factorization.

162640651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633100.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 162640651 is about 12753.0643768468. The cubic root of 162640651 is about 545.8538376670.

The spelling of 162640651 in words is "one hundred sixty-two million, six hundred forty thousand, six hundred fifty-one".