261913467 has 8 divisors (see below), whose sum is σ = 349445440. Its totient is φ = 174495240.

The previous prime is 261913459. The next prime is 261913481. The reversal of 261913467 is 764319162.

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

It is not a de Polignac number, because 261913467 - 2³ = 261913459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (261913427) 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, 22909 + ... + 32382.

It is an arithmetic number, because the mean of its divisors is an integer number (43680680).

Almost surely, 2^261913467 is an apocalyptic number.

261913467 is a deficient number, since it is larger than the sum of its proper divisors (87531973).

261913467 is a wasteful number, since it uses less digits than its factorization.

261913467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56873.

The product of its digits is 54432, while the sum is 39.

The square root of 261913467 is about 16183.7408221956. The cubic root of 261913467 is about 639.8123367424.

The spelling of 261913467 in words is "two hundred sixty-one million, nine hundred thirteen thousand, four hundred sixty-seven".