61319471 has 4 divisors (see below), whose sum is σ = 62976792. Its totient is φ = 59662152.

The previous prime is 61319437. The next prime is 61319483. The reversal of 61319471 is 17491316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61319471 - 2⁶ = 61319407 is a prime.

It is a super-3 number, since 3×61319471³ (a number of 24 digits) contains 333 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 (61319431) 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, 828605 + ... + 828678.

It is an arithmetic number, because the mean of its divisors is an integer number (15744198).

Almost surely, 2^61319471 is an apocalyptic number.

61319471 is a deficient number, since it is larger than the sum of its proper divisors (1657321).

61319471 is a wasteful number, since it uses less digits than its factorization.

61319471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1657320.

The product of its digits is 4536, while the sum is 32.

The square root of 61319471 is about 7830.6750028334. The cubic root of 61319471 is about 394.3357334011.

The spelling of 61319471 in words is "sixty-one million, three hundred nineteen thousand, four hundred seventy-one".