70690477 has 16 divisors (see below), whose sum is σ = 86663808. Its totient is φ = 56738880.

The previous prime is 70690463. The next prime is 70690483. The reversal of 70690477 is 77409607.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-70690477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70690577) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7458 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (5416488).

Almost surely, 2^70690477 is an apocalyptic number.

It is an amenable number.

70690477 is a deficient number, since it is larger than the sum of its proper divisors (15973331).

70690477 is a wasteful number, since it uses less digits than its factorization.

70690477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21540.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 70690477 is about 8407.7629010338. The cubic root of 70690477 is about 413.4791714965.

The spelling of 70690477 in words is "seventy million, six hundred ninety thousand, four hundred seventy-seven".