961802651 has 4 divisors (see below), whose sum is σ = 961867704. Its totient is φ = 961737600.

The previous prime is 961802617. The next prime is 961802663. The reversal of 961802651 is 156208169.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 156208169 = 13 ⋅12016013.

It is a cyclic number.

It is not a de Polignac number, because 961802651 - 2⁶ = 961802587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (961802851) 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, 1556 + ... + 43886.

It is an arithmetic number, because the mean of its divisors is an integer number (240466926).

Almost surely, 2^961802651 is an apocalyptic number.

961802651 is a deficient number, since it is larger than the sum of its proper divisors (65053).

961802651 is a wasteful number, since it uses less digits than its factorization.

961802651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65052.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 961802651 is about 31012.9432817977. The cubic root of 961802651 is about 987.1019047175.

The spelling of 961802651 in words is "nine hundred sixty-one million, eight hundred two thousand, six hundred fifty-one".