830664451 has 4 divisors (see below), whose sum is σ = 830736504. Its totient is φ = 830592400.

The previous prime is 830664449. The next prime is 830664493. The reversal of 830664451 is 154466038.

It is a happy number.

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.

It is a 4-Lehmer number, since φ(830664451) divides (830664451-1)⁴.

It is a cyclic number.

It is not a de Polignac number, because 830664451 - 2¹ = 830664449 is a prime.

It is a deceptive number, since it divides R_830664450.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 830664451.

It is not an unprimeable number, because it can be changed into a prime (830664431) 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, 14410 + ... + 43231.

It is an arithmetic number, because the mean of its divisors is an integer number (207684126).

It is a Poulet number, since it divides 2^830664450-1.

Almost surely, 2^830664451 is an apocalyptic number.

830664451 is the 14411-st decagonal number.

830664451 is a deficient number, since it is larger than the sum of its proper divisors (72053).

830664451 is a wasteful number, since it uses less digits than its factorization.

830664451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72052.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 830664451 is about 28821.2499902416. The cubic root of 830664451 is about 940.0303487259.

It can be divided in two parts, 830 and 664451, that added together give a triangular number (665281 = T₁₁₅₃).

The spelling of 830664451 in words is "eight hundred thirty million, six hundred sixty-four thousand, four hundred fifty-one".