157579669 has 8 divisors (see below), whose sum is σ = 169995672. Its totient is φ = 145205760.

The previous prime is 157579663. The next prime is 157579679. The reversal of 157579669 is 966975751.

It is a happy number.

157579669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 29052100 + 128527569 = 5390^2 + 11337^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 157579669 - 2³ = 157579661 is a prime.

It is a super-2 number, since 2×157579669² = 49662704164299122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157579661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2512 + ... + 17929.

It is an arithmetic number, because the mean of its divisors is an integer number (21249459).

Almost surely, 2^157579669 is an apocalyptic number.

It is an amenable number.

157579669 is a deficient number, since it is larger than the sum of its proper divisors (12416003).

157579669 is a wasteful number, since it uses less digits than its factorization.

157579669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21047.

The product of its digits is 3572100, while the sum is 55.

The square root of 157579669 is about 12553.0740856573. The cubic root of 157579669 is about 540.1321910026.

The spelling of 157579669 in words is "one hundred fifty-seven million, five hundred seventy-nine thousand, six hundred sixty-nine".