61408315 has 8 divisors (see below), whose sum is σ = 74007648. Its totient is φ = 48914880.

The previous prime is 61408307. The next prime is 61408327. The reversal of 61408315 is 51380416.

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

It is not a de Polignac number, because 61408315 - 2³ = 61408307 is a prime.

It is a super-2 number, since 2×61408315² = 7541962302278450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25191 + ... + 27520.

It is an arithmetic number, because the mean of its divisors is an integer number (9250956).

Almost surely, 2^61408315 is an apocalyptic number.

61408315 is a deficient number, since it is larger than the sum of its proper divisors (12599333).

61408315 is a wasteful number, since it uses less digits than its factorization.

61408315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52949.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 61408315 is about 7836.3457682775. The cubic root of 61408315 is about 394.5260886931.

The spelling of 61408315 in words is "sixty-one million, four hundred eight thousand, three hundred fifteen".