61464623 has 4 divisors (see below), whose sum is σ = 67052328. Its totient is φ = 55876920.

The previous prime is 61464589. The next prime is 61464631. The reversal of 61464623 is 32646416.

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

It is not a de Polignac number, because 61464623 - 2²² = 57270319 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61464623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61464643) 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, 2793836 + ... + 2793857.

It is an arithmetic number, because the mean of its divisors is an integer number (16763082).

Almost surely, 2^61464623 is an apocalyptic number.

61464623 is a deficient number, since it is larger than the sum of its proper divisors (5587705).

61464623 is a wasteful number, since it uses less digits than its factorization.

61464623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5587704.

The product of its digits is 20736, while the sum is 32.

The square root of 61464623 is about 7839.9376910789. The cubic root of 61464623 is about 394.6466379949.

The spelling of 61464623 in words is "sixty-one million, four hundred sixty-four thousand, six hundred twenty-three".