61764031 has 8 divisors (see below), whose sum is σ = 70947360. Its totient is φ = 52670688.

The previous prime is 61764023. The next prime is 61764049. The reversal of 61764031 is 13046716.

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

It is not a de Polignac number, because 61764031 - 2³ = 61764023 is a prime.

It is a super-2 number, since 2×61764031² = 7629591050737922, which contains 22 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 (61764061) 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, 21016 + ... + 23773.

It is an arithmetic number, because the mean of its divisors is an integer number (8868420).

Almost surely, 2^61764031 is an apocalyptic number.

61764031 is a deficient number, since it is larger than the sum of its proper divisors (9183329).

61764031 is a wasteful number, since it uses less digits than its factorization.

61764031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44993.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61764031 is about 7859.0095431931. The cubic root of 61764031 is about 395.2864044734.

The spelling of 61764031 in words is "sixty-one million, seven hundred sixty-four thousand, thirty-one".