61722465 has 16 divisors (see below), whose sum is σ = 112864128. Its totient is φ = 28215936.

The previous prime is 61722443. The next prime is 61722487. The reversal of 61722465 is 56422716.

It is an interprime number because it is at equal distance from previous prime (61722443) and next prime (61722487).

It is not a de Polignac number, because 61722465 - 2⁵ = 61722433 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293812 + ... + 294021.

It is an arithmetic number, because the mean of its divisors is an integer number (7054008).

Almost surely, 2^61722465 is an apocalyptic number.

It is an amenable number.

61722465 is a deficient number, since it is larger than the sum of its proper divisors (51141663).

61722465 is a wasteful number, since it uses less digits than its factorization.

61722465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587848.

The product of its digits is 20160, while the sum is 33.

The square root of 61722465 is about 7856.3646173023. The cubic root of 61722465 is about 395.1977112022.

The spelling of 61722465 in words is "sixty-one million, seven hundred twenty-two thousand, four hundred sixty-five".